Series Books in Order
The Xanth series by Piers Anthony
  1. A Spell for Chameleon
  2. The Source of Magic
  3. Castle Roogna
  4. Centaur Aisle
  5. Ogre, Ogre
  6. Night Mare
  7. Dragon on a Pedestal
  8. Crewel Lye
  9. Golem in the Gears
  10. Vale of the Vole
  11. Heaven Cent
  12. Man from Mundania
  13. Isle of View
  14. Question Quest
  15. The Color of Her Panties
  16. Demons Don't Dream
  17. Harpy Thyme
  18. Geis of the Gargoyle
  19. Roc and a Hard Place
  20. Yon Ill Wind
  21. Faun & Games
  22. Zombie Lover
  23. Xone of Contention
  24. The Dastard
  25. Swell Foop
  26. Up in a Heaval
  27. Cube Route
  28. Currant Events
  29. Pet Peeve 
  30. Stork Naked 
  31. Air Apparent 
  32. Two to the Fifth
  33. Jumper Cable 
  34. Knot Gneiss 
  35. Well-Tempered Clavicle 
  36. Luck of the Draw (due 2012)

The Meg Langslow series by Donna Andrews
  1. Murder with Peacocks
  2. Murder with Puffins
  3. Revenge of the Wrought Iron Flamingos
  4. Crouching Buzzard, Leaping Loon
  5. We'll Always Have Parrots
  6. Owls Well That Ends Well
  7. No Nest for the Wicket 
  8. The Penguin who Knew Too Much 
  9. Cockatiels at Seven 
  10. Six Geese A-Slaying
  11. Swan for the Money
  12. Stork Raving Mad
  13. The Real Macaw

The Agatha Raisin series by M.C. Beaton
  1. Agatha Raisin and the Quiche of Death
  2. Agatha Raisin and the Vicious Vet 
  3. Agatha Raisin and the Potted Gardner
  4. Agatha Raisin and the Walkers of Dembley 
  5. Agatha Raisin and the Murderous Marriage
  6. Agatha Raisin and the Terrible Tourist 
  7. Agatha Raisin and the Wellspring of Death 
  8. Agatha Raisin and the Wizard of Evesham 
  9. Agatha Raisin and the Witch of Wyckhadden
  10. Agatha Raisin and the Fairies of Fryfam
  11. Agatha Raisin and the Love from Hell
  12. Agatha Raisin and the Day the Floods Came 
  13. Agatha Raisin and the Case of the Curious Curate
  14. Agatha Raisin And The Haunted House
  15. The Deadly Dance
  16. The Perfect Paragon
  17. Love, Lies and Liquor 
  18. Kissing Christmas Goodbye
  19. Agatha Raisin and a Spoonful of Poison
  20. There Goes the Bride 
  21. Busy Body 
  22. As the Pig Turns

The Hamish Macbeth series by M.C. Beaton
  1. Death of a Gossip
  2. Death of a Cad
  3. Death of an Outsider 
  4. Death of a Perfect Wife
  5. Death of a Hussy 
  6. Death of a Snob 
  7. Death of a Prankster
  8. Death of a Glutton 
  9. Death of a Travelling Man 
  10. Death of a Charming Man
  11. Death of a Nag 
  12. Death of a Macho Man 
  13. Death of a Dentist 
  14. Death of a Scriptwriter 
  15. Death of an Addict 
  16. A Highland Christmas 
  17. Death of a Dustman 
  18. Death of a Celebrity 
  19. Death of a Village
  20. Death of a Poison Pen 
  21. Death of a Bore
  22. Death of a Dreamer
  23. Death of a Gentle Lady
  24. Death of a Witch
  25. Death of a Valentine 
  26. Death of a Chimney Sweep 
  27. Death of a Kingfisher

The Flavia de Luce Mysteries by Alan Bradley
  1. The Sweetness at the Bottom of the Pie
  2. The Weed That Strings the Hangman's Bag
  3. A Red Herring Without Mustard 
  4. I Am Half-Sick of Shadows

The Cat Who... by Lilian Jackson Braun
  • The Cat Who Could Read Backwards 
  • The Cat Who Ate Danish Modern 
  • The Cat Who Turned On and Off 
  • The Cat Who Saw Red 
  • The Cat Who Played Brahms 
  • The Cat Who Played Post Office 
  • The Cat Who Knew Shakespeare 
  • The Cat Who Sniffed Glue 
  • The Cat Who Went Underground 
  • The Cat Who Talked to Ghosts 
  • The Cat Who Lived High 
  • The Cat Who Knew a Cardinal 
  • The Cat Who Moved a Mountain 
  • The Cat Who Wasn't There 
  • The Cat Who Went into the Closet 
  • The Cat Who Came to Breakfast 
  • The Cat Who Blew the Whistle 
  • The Cat Who Said Cheese 
  • The Cat Who Tailed a Thief 
  • The Cat Who Sang for the Birds 
  • The Cat Who Saw Stars 
  • The Cat Who Robbed a Bank 
  • The Cat Who Smelled a Rat 
  • The Cat Who Went Up the Creek 
  • The Cat Who Brought Down the House 
  • The Cat Who Talked Turkey 
  • The Cat Who Went Bananas 
  • The Cat Who Dropped a Bombshell
  • The Cat Who Had 60 Whiskers
  • The Cat Who Smelled Smoke (publication cancelled)

The Mrs. Jeffries series by Emily Brightwell
  1. The Inspector and Mrs Jeffries 
  2. Mrs. Jeffries Dusts For Clues
  3. The Ghost and Mrs Jeffries 
  4. Mrs. Jeffries On the Ball 
  5. Mrs. Jeffries Takes Stock 
  6. Mrs. Jeffries On the Trail 
  7. Mrs. Jeffries Plays the Cook 
  8. Mrs. Jeffries and the Missing Alibi 
  9. Mrs. Jeffries Stands Corrected 
  10. Mrs. Jeffries Takes the Stage 
  11. Mrs. Jeffries Questions the Answers 
  12. Mrs. Jeffries Reveals Her Art 
  13. Mrs. Jeffries Takes the Cake 
  14. Mrs. Jeffries Rocks the Boat 
  15. Mrs. Jeffries Weeds the Plot 
  16. Mrs. Jeffries Pinches the Post 
  17. Mrs. Jeffries Pleads Her Case 
  18. Mrs. Jeffries Sweeps the Chimney 
  19. Mrs. Jeffries Stalks the Hunter 
  20. Mrs. Jeffries and the Silent Knight 
  21. Mrs. Jeffries Appeals the Verdict
  22. Mrs. Jeffries and the Best Laid Plans
  23. Mrs. Jeffries and the Feast of St. Stephen
  24. Mrs. Jeffries Holds the Trump
  25. Mrs. Jeffries in the Nick of Time
  26. Mrs. Jeffries and the Yuletide Wedding
  27. Mrs. Jeffries Speaks Her Mind
  28. Mrs. Jeffries Forges Ahead
  29. Mrs. Jeffries and the Mistletoe Mix-Up
  30. Mrs. Jeffreis Defends Her Own

The Mrs. Murphy series by Rita Mae Brown & Sneaky Pie Brown
  1. Wish You Were Here
  2. Rest in Pieces
  3. Murder At Monticello 
  4. Pay Dirt 
  5. Murder She Meowed 
  6. Murder on the Prowl 
  7. Cat on the Scent
  8. Pawing Through the Past 
  9. Claws and Effect 
  10. Catch As Cat Can 
  11. The Tail Of The Tip-Off 
  12. Whisker Of Evil 
  13. Cat's Eyewitness
  14. Sour Puss 
  15. Puss 'n Cahoots 
  16. The Purrfect Murder
  17. Santa Clawed
  18. Cat of the Century
  19. Hiss of Death
  20. The Big Cat Nap (due 2012)

The Chocoholic Mystery series by JoAnna Carl
  1. The Chocolate Cat Caper
  2. The Chocolate Bear Burglary
  3. The Chocolate Frog Frameup
  4. The Chocolate Puppy Puzzle
  5. The Chocolate Mouse Trap
  6. The Chocolate Bridal Bash
  7. The Chocolate Jewel Case 
  8. The Chocoalte Snowman Murders
  9. The Chocolate Cupid Killings 
  10. Chocolate to Die For 
  11. The Chocolate Pirate Plot
  12. The Chocolate Castle Clue

"The Army of thePotomac" by Bruce Catton
  1. Mr. Lincoln's Army
  2. Glory Road
  3. A Stillness at Appomattox

The Mortal Instruments series by Cassandra Clare
  1. City of Bones
  2. City of Ashes
  3. City of Glass
  4. City of Fallen Angels
  5. City of Lost Souls (due 2012)

The Hunger Games trilogy by Susan Collins
  1. The Hunger Games
  2. Catching Fire
  3. Mockingjay

The Richard Sharpe series by Bernard Cornwell
Cornwell wrote the original Richard Sharpe series in the 1980s and has been adding sequels and prequels ever since.  It's best to read the original series first.
 
Original series: Complete series in story order:
  1. Sharpe's Eagle
  2. Sharpe's Gold
  3. Sharpe's Company
  4. Sharpe's Sword
  5. Sharpe's Enemy
  6. Sharpe's Honour
  7. Sharpe's Regiment
  8. Sharpe's Siege
  9. Sharpe's Revenge
  10. Sharpe's Waterloo
  1. Sharpe's Tiger
  2. Sharpe's Triumph
  3. Sharpe's Fortress
  4. Sharpe's Trafalgar
  5. Sharpe's Prey
  6. Sharpe's Rifles
  7. Sharpe's Havoc
  8. Sharpe's Eagle
  9. Sharpe's Gold
  10. Sharpe's Escape
  11. Sharpe's Fury
  12. Sharpe's Battle
  13. Sharpe's Company
  14. Sharpe's Sword
  15. Sharpe's Skirmish
  16. Sharpe's Enemy
  17. Sharpe's Honour
  18. Sharpe's Regiment
  19. Sharpe's Christmas
  20. Sharpe's Siege
  21. Sharpe's Revenge
  22. Sharpe's Waterloo
  23. Sharpe's Ransom
  24. Sharpe's Devil


 The Stephanie Plum series by Janet Evanovich
  1. One for the Money
  2. Two for the Dough
  3. Three To Get Deadly
  4. Four To Score
  5. High Five
  6. Hot Six
  7. Seven Up
  8. Hard Eight
  9. To the Nines
  10. Ten Big Ones
  11. Eleven on Top
  12. Twelve Sharp
  13. Lean Mean Thirteen
  14. Fearless Fourteen
  15. Finger Lickin' Fifteen
  16. Sizzling Sixteen
  17. Smokin' Seventeen
  18. Explosive Eighteen

The Horatio Hornblower series by C.S. Forester
This series can either be read in story order or in publication order.  I recommend reading it in publication order, so you'll meet the characters and experience the stories in the order the author intended.
 
Publication order: Story order:
  1. Beat to Quarters
  2. Ship of the Line
  3. Flying Colours
  4. Commodore Hornblower
  5. Lord Hornblower
  6. Mr Midshipman Hornblower
  7. Lieutenant Hornblower
  8. Hornblower and the Atropos
  9. Admiral Hornblower in the West Indies
  10. Hornblower and the Hotspur
  11. Hornblower during the Crisis
  1. Mr Midshipman Hornblower
  2. Lieutenant Hornblower
  3. Hornblower and the Hotspur
  4. Hornblower during the Crisis
  5. Hornblower and the Atropos
  6. Beat to Quarters
  7. A Ship of the Line
  8. Flying Colours
  9. Commodore Hornblower
  10. Lord Hornblower
  11. Admiral Hornblower in the West Indies



The Kinsey Milhone series by Sue Grafton
  1. "A" Is for Alibi 
  2. "B" Is for Burglar 
  3. "C" Is for Corpse 
  4. "D" Is for Deadbeat 
  5. "E" Is for Evidence 
  6. "F" Is for Fugitive 
  7. "G" Is for Gumshoe 
  8. "H" Is for Homicide 
  9. "I" Is for Innocent 
  10. "J" Is for Judgment 
  11. "K" Is for Killer 
  12. "L" Is for Lawless 
  13. "M" Is for Malice 
  14. "N" Is for Noose 
  15. "O" Is for Outlaw 
  16. "P" Is for Peril 
  17. "Q" Is for Quarry 
  18. "R" Is for Ricochet 
  19. "S" Is for Silence
  20. "T" Is for Tresspass
  21. "U" Is for Undertow 
  22. "V" Is for Vengeance

The Death on Demand series by Carolyn G. Hart
  1. Death on Demand
  2. Design for Murder
  3. Something Wicked
  4. Honeymoon With Murder
  5. A Little Class on Murder
  6. Deadly Valentine
  7. The Christie Caper
  8. Southern Ghost
  9. Mint Julep Murder
  10. Yankee Doodle Dead
  11. White Elephant Dead
  12. Sugarplum Dead
  13. April Fool Dead
  14. Engaged to Die
  15. Murder Walks the Plank
  16. Death of the Party
  17. Dead Days of Summer
  18. Death Walked In
  19. Dare to Die
  20. Laughed 'Til He Died
  21. Dead by Midnight
  22. Death Comes Silently

The Mrs. Pollifax series by Dorothy Gilman
  1. The Unexpected Mrs. Pollifax
  2. The Amazing Mrs. Pollifax
  3. The Elusive Mrs. Pollifax
  4. A Palm for Mrs. Pollifax
  5. Mrs. Pollifax on Safari
  6. Mrs. Pollifax on the China Station
  7. Mrs. Pollifax and the Hong Kong Buddha
  8. Mrs. Pollifax and the Golden Triangle
  9. Mrs. Pollifax and the Whirling Dervish
  10. Mrs. Pollifax and the Second Thief
  11. Mrs. Pollifax Pursued
  12. Mrs. Pollifax and the Lion Killer
  13. Mrs. Pollifax, Innocent Tourist
  14. Mrs. Pollifax Unveiled

The Wheel of Time series by Robert Jordan
Robert Jordan died in 2007, while writing the final book of the series, A Memory of Light.  His widow chose Brandon Sanderson to complete the series in accordance with Jordan's wishes.
  • New Spring (prequel)
  1. The Eye of the World
  2. The Great Hunt
  3. The Dragon Reborn
  4. The Shadow Rising
  5. The Fires of Heaven
  6. Lord of Chaos
  7. A Crown of Swords
  8. The Path of Daggers
  9. Winter's Heart
  10. Crossroads of Twilight
  11. Knife of Dreams
  12. The Gathering Storm (completed by Brandon Sanderson)
  13. Towers of Midnight (completed to Brandon Sanderson)
  14. A Memory of Light to be completed by Brandon Sanderson (due 2012)

The Mary Russell series by Laurie R. King
  1. The Beekeeper's Apprentice
  2. A Monstrous Regiment of Women
  3. A Letter of Mary
  4. The Moor
  5. O Jerusalem
  6. Justice Hall
  7. The Game 
  8. Locked Rooms
  9. The Language of Bees 
  10. The God of the Hive 
  11. Pirate King

"The Chronicles of Narnia" by C.S. Lewis
C.S. Lewis recommended reading the Chronicles in story order, rather than in publication order.
 
Story order: Publication order:
  1. The Magician's Nephew
  2. The Lion, the Witch, and the Wardrobe
  3. The Horse and His Boy
  4. Prince Caspian
  5. The Voyage of the Dawn Treader
  6. The Silver Chair
  7. The Last Battle
  1. The Lion, the Witch, and the Wardrobe
  2. Prince Caspian
  3. The Voyage of the Dawn Treader
  4. The Silver Chair
  5. The Horse and His Boy
  6. The Magician's Nephew
  7. The Last Battle


The Giver trilogy by Lois Lowry
  1. The Giver
  2. Gathering Blue
  3. Messenger

The No. 1 Ladies' Detective Agency series by Alexander McCall Smith
  1. The No. 1 Ladies' Detective Agency
  2. Tears of the Giraffe
  3. Morality for Beautiful Girls
  4. The Kalahari Typing School for Men
  5. The Full Cupboard of Life
  6. In the Company of Cheerful Ladies 
  7. Blue Shoes and Happiness
  8. The Good Husband of Zebra Drive
  9. The Miracle at Speedy Motors
  10. Tea Time for the Traditionally Built
  11. The Double Comfort Safari Club 
  12. The Saturday Big Tent Wedding Party

The Amelia Peabody series by Elizabeth Peters
  1. Crocodile on the Sandbank
  2. Curse of the Pharaohs
  3. The Mummy Case
  4. Lion in the Valley
  5. The Deeds of the Disturber
  6. The Last Camel Died at Noon
  7. The Snake, the Crocodile, and the Dog
  8. The Hippopotamus Pool
  9. Seeing a Large Cat
  10. The Ape Who Guards the Balance
  11. The Falcon at the Portal
  12. He Shall Thunder in the Sky
  13. Lord of the Silent
  14. The Golden One
  15. Children of the Storm
  16. Guardian of the Horizon
  17. The Serpent on the Crown
  18. Tomb of the Golden Bird 
  19. A River in the Sky

Discworld by Terry Pratchet
All of the stories take place in Discworld but some stories focus on certain characters, creating series within the series.
In publication order: By character:
  1. The Colour of Magic
  2. The Light Fantastic
  3. Equal Rites
  4. Mort
  5. Sourcery
  6. Wyrd Sisters
  7. Pyramids
  8. Guards! Guards!
  9. Eric
  10. Moving Pictures
  11. Reaper Man
  12. Witches Abroad
  13. Small Gods
  14. Lords and Ladies
  15. Men At Arms
  16. Soul Music 
  17. Interesting Times
  18. Maskerade
  19. Feet of Clay
  20. Hogfather
  21. Jingo
  22. The Last Continent
  23. Carpe Jugulum
  24. The Fifth Elephant
  25. The Truth
  26. The Thief of Time
  27. The Last Hero
  28. The Amazing Maurice and His Educated Rodents
  29. Night Watch
  30. The Wee Free Men
  31. Monstrous Regiment
  32. A Hat Full of Sky
  33. Going Postal
  34. Thud!
  35. Making Money
  36. Unseen Academicals 
  37. I Shall Wear Midnight 
  38. Snuff
Rincewind:
  1. The Colour of Magic
  2. The Light Fantastic
  3. Sourcery
  4. Eric
  5. Interesting Times
  6. The Last Continent
  7. Unseen Academicals
The Witches of Lancre:
  1. Equal Rites
  2. Wyrd Sisters
  3. Witches Abroad
  4. Lords and Ladies
  5. Maskerade
  6. Carpe Jugulum
Death:
  1. Mort
  2. Reaper Man
  3. Soul Music
  4. Hogfather
  5. Thief of Time
Moist von Lipwig:
  1. Going Postal
  2. Making Money

 

The City Watch:
  1. Guards! Guards!
  2. Men at Arms
  3. Feet of Clay
  4. Jingo
  5. The Fifth Elephant
  6. Night Watch
  7. Thud!
  8. Snuff
Tiffany Aching:
  1. The Wee Free Men
  2. A Hat Full of Sky
  3. Wintersmith
  4. I Shall Wear Midnight
Miscellaneous:
  • Pyramids
  • Moving Pictures
  • Small Gods
  • The Truth
  • The Last Hero
  • The Amazing Maurice and His Educated Rodents
  • Monstrous Regiment

 


The Inspector Ian Rutledge series by Charles Todd
  1. A Test of Wills
  2. Wings of Fire
  3. Search the Dark
  4. Legacy of the Dead
  5. Watchers of Time
  6. A Fearsome Doubt
  7. A Cold Treachery
  8. A Long Shadow
  9. A False Mirror
  10. A Pale Horse
  11. A Matter of Justice 
  12. The Red Door
  13. A Lonely Death 
  14. The Confession

"The Lord of the Rings" by J.R.R. Tolkein
"The Lord of the Rings" is technically a sequel to The Hobbit, which you might want to read first.
  1. The Fellowship of the Ring
  2. The Two Towers
  3. The Return of the King

The Uglies series by Scott Westerfeld
  1. Uglies
  2. Pretties
  3. Specials
  4. Extras