- Annabel Laine
- The Reluctant Heiress
- The Melancholy Virgin
- Deryn Lake
- Death in a Dark Walk
- Death at the Beggar's Opera
- Death at the Devil's Tavern
- Death on Romney Marsh
- Death in the Peerless Pool
- Death in Apothecaries' Hall
- Death in the West Wind
- Death at St. James's Palace
- Death in the Valley of Shadows
- Death in the Setting Sun
- Death and the Cornish Fiddler
- Death in Hellfire
- Dewey Lambdin
- Cope of Heaven
- What Lies Buried
- William Landay
- Clare Langley-Hawthorne
- Consequences of Sin
- The Serpent and the Scorpion
- Joe R. Lansdale
- Patrick Larkin
- Gaylord Larsen
- Jose Latour
- Janet Laurence
- Canaletto and the Case of Westminster Bridge
- Canaletto and the Case of the Privy Garden
- Canaletto and the Case of Bonnie Prince Charlie
- Margaret Lawrence (Hannah Trevor Series)
- Hearts and Bones
- Blood Red Roses
- The Burning Bride
- Margaret Lawrence (Jennet Trevor Standalone)
- John Lawton (Inspector Troy series)
- Black Out
- Old Flames
- A Little White Death
- Riptide - 1st USA edition reissued as Bluffing Mr.Churchill
- Flesh Wounds (aka Blue Rondo in UK)
- Second Violin
- John Lawton (Turner Raines standalone)
- Suzann Ledbetter
- A Lady Never Trifles with Thieves
- A Lady Never Meddles in Murder
- Elmore Leonard
- The Hot Kid
- Comfort to the Enemy (serialized in the NYT, to be published later)
- Up in Honey’s Room
- Giulio Leoni
- The Third Heaven Conspiracy (UK title)
(US title: The Mosaic Crimes)
- John Lescroart
- Son of Holmes
- Rasputin's Revenge
- Simon Levack
- A Demon of the Air
- Shadow of the Lords
- City of Spies
- Law and Ordure - a Yaotl short story available for free at the author's website.
- Tribute of Death
- Michael Levey
- An Affair on the Appian Way
- Lee Levin
- Allan Levine
- The Blood Libel
- Sins of the Suffragette
- The Bolshevik's Revenge
- Stephen Lewis
- The Dumb Shall Sing
- The Blind in Darkness
- The Sea Hath Spoken
- Margit Liesche
- Alice Chetwynd Ley
- A Reputation Dies
- A Fatal Assignation
- Masquerade of Vengeance
- Gillian Linscott
- Sister Beneath the Sheet
- Hanging on the Wire
- Stage Fright
- An Easy Day for a Lady
- Crown Witness
- Dead Man's Sweetheart
- Dance on Blood
- Absent Friends
- The Perfect Daughter
- Dead Man Riding
- Blood on the Wood
- Clyde Linsley
- Death of a Mill Girl
- Saving Louisa
- Die Like A Hero
- David Liss
- A Conspiracy of Paper
- A Spectacle of Corruption
- The Devil’s Company (forthcoming in 2009)
- David Liss
- Dick Lochte
- Joan Lock
- Dead Image
- Dead Born
- Dead Letters
- Dead End
- Dead Fall
- Dead Loss
- Martin Long
- The Dark Gateway
- The Garden House
- The Music Room
- Peter Lovesey (Inspector Cribb Series)
- Wobble to Death
- The Detective Wore Silk Drawers
- Abracadaver
- Mad Hatter's Holiday
- Invitation to a Dynamite Party Variant Title: The Tick of Death
- A Case of Spirits
- Swing, Swing Together
- Waxwork
- Peter Lovesey (Albert, Prince of Wales Series)
- Bertie and the Tinman
- Bertie and the Seven Bodies
- Bertie and the Crime of Passion
- Peter Lovesey (standalone)
- Peter Lovesey (standalone)
- Keystone: Murder Mystery at the Keystone Film Company
- Marianne Luban
- Carlo Lucarelli
- Carte Blanche
- The Damned Season
- Via Delle Oche
- John Luck, M.D.
- Jerry Ludwig
- Getting Garbo: A Novel Of Hollywood And Murder
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