Taft, Willie: a former back-up singer and PI, in the South by Mary Saums

Talbot, Jeff: former FBI agent turned antique picker, in Seattle, Washington by Deborah Morgan

Tallon, Jack: by John Ball

Tamar, Hilary: medieval law professor in Oxford, England by Sarah Caudwell

Tanaka, Ken: computer programmer in Los Angeles, California by Dale Furutani

Tangent, Peter: troubleshooter for American oil company in Africa by Lawrence Sanders

Tanner, Bay: was a financial consultant before her husband died, in Hilton Head, South Carolina by Kathryn R. Wall

Tanner, Evan: government agent with permanent insomnia in the United States by Lawrence Block

Tanner, John Marshall: non-practicing attorney and private eye in San Francisco, California by Stephen Greenleaf

Tanner, Michael: a successful public relations executive in Seattle, Washington by Carl Brookins

Tartaglia, Nicholas: a private investigator in Spencerport, New York by Phillip Tomasso

Tasker, Bill: a special agent of the Department of Law Enforcement in Florida by James O. Born

Tate, Gerry: in public relations in London, England by Marian Babson

Tatum, Bill: former Army sniper and current Deputy Sheriff of Mineral County in Dumont, Colorado by Evan McNamara

Tatum, Nan & Bert: identical twins in Louisville, Kentucky by Barbara Taylor McCafferty

Tay-bodal: 19th century Kiowa healer in Oklahoma by Mardi Oakley Medawar

Taylor, Fred: an art historian in Boston, Massachusetts by Nicholas Kilmer

Taylor, Holland: an ex-cop turned private investigator in St. Paul, Minnesota by David Housewright

Taylor, Jack: an Irishman who's luck at finding things keeps him in beer money by Ken Bruen

Teagarden, Aurora: librarian turned real estate agent in Lawrenceton, Georgia by Charlaine Harris

Teague, Kate: a history teacher in California by Wendy Hornsby

Teague, Sydney: advertising agency owner in Charlotte, North Carolina by Anne Underwood Grant

Templar, Simon “The Saint”: an international thief, millionaire, and master of disguise by Burl Barer

Templar, Simon “The Saint”: an international thief, millionaire, and master of disguise created by Leslie Charteris

Temple, Paul: a crime writer turned private investigator in London, England by Francis Durbridge

Temple, Rebecca: a family practice physician in Toronto, Ontario, Canada by Sylvia Maultash Warsh

Tennison, Jane: detective chief inspector in England by Lynda La Plante

Tepper, Sally: unemployed actress with five dogs in New York, New York by Lydia Adamson

Terrell, Frank by James Hadley Chase

Terry, Inspector Frederick: a detective in London, England by Christine Spindler

Tewes, Jane Francis: a doctor in the 1890s in Chicago, Illinois by Robert W. Walker

Thackeray, Edward: Victorian policemen in London, England by Peter Lovesey

Thackeray, Michael: police inspector in Yorkshire, England by Patricia Hall

Thane, Colin: a Scottish Crime Squad officer in Glasgow, Scotland by Bill Knox

Thanet, Luke: police inspector in Sturrenden, England by Dorothy Simpson

Thatcher, John Putnam: financial whiz on Wall Street in New York, New York by Emma Lathen

Theobald, Kate: a reporter by Lionel Black

Theron, Thomas: a history professor in Boston, Massachusetts by Robert Reeves

Thinnes, John: a cop in Chicago, Illinois by Michael Allen Dymmoch

Thomas, Cindy: reporter,  a founding member of The Women's Murder Club in San Francisco, California  by James Patterson

Thompson, Hank: a former high school star baseball player, now a bartender with a drinking problem in Paul's Place, on the Lower East Side of Manhattan, New York by Charlie Huston

Thorn: eco-avenger PI in Key Largo, Florida by James W. Hall

Thorn, Peter: an army colonel and counter-terrorism expert by Larry Bond

Thorndyke, Dr. John Evelyn: physician and barrister by R. Austin Freeman

Thorne, Iris: an investment counselor in Los Angeles, California by Dianne G. Pugh

Thorne, Tom: a middle aged detective inspector in London, England by Mark Billingham

Thornhill, Richard: 1950s detective inspector in Lydmouth, England by Andrew Taylor

Thornton, Joshua: appointed special prosecutor for a case of double homicide in Chester, West Virginia by Lauren Carr

Thorssen, Alix: a gallery owner and art forgery expert, in Jackson Hole, Wyoming by Lise McClendon

Tibbett, Henry: Scotland Yard Inspector in London, England by Patricia Moyes

Tibbs, Virgil: a homicide detective in Pasadena, California by John Ball

Tillman, half of a pair turn-of-the-century policemen in New York, New York by William Marshall

Timberlake, Abigail: owner of the den of Antiquity in charlotte, North Carolina by Tamar Myers

Triptree, Jacobia: onetime financial advisor to the Mob, now living in Eastport, Maine by Sarah Graves

Titus, Nicky: photographer and wife, in Holton, Oklahoma by Eve K. Sandstrom

Titus, Sam: a sheriff in Holton, Oklahoma by Eve K. Sandstrom

Toadfern, Josie: a stain expert and laundromat owner in Paradise, Ohio by Sharon Short

Tobin: a hot-tempered movie critic in New York, New York by Ed Gorman

Tolliver, Ben: NYPD lieutenant in New York, New York by James Neal Harvey The Tonnemans: a family in Colonial New York (New Amsterdam), New York by Maan Meyers

Torry, Derek: is featured in cop thrillers by John Gardner

Townsend, C. J.: an  Assistant State Attorney  in Miami, Florida by Jilliane Hoffman

Townsend, Father Mark: a Jesuit priest in Washington State by Brad Reynolds

Toye, Gregory: a Scotland Yard detective in London, England by Elizabeth Lemarchand

Tozzi, Mike: FBI agent undercover with the Mob in New York, New York by Anthony Bruno

Tracer, John: a family-man sleuth in Monterey, California by Jeff Andrus

Train, Rick by Bruno Fischer

Tramwell, Hyacinth and Primrose: a pair of dotty sisters and owners of the Flowers Detection Agency in Chitterton Falls, England by Dorothy Cannell

Traveler, Moroni: non-Mormon ex-football player, private investigator in Salt Lake City, Utah by Robert Irvine

Travers, Nick: ex-football star, part-time detective and full-time expert on blues in New Orleans by Ace Atkins

Travers, Tory: engineer in El Paso, Texas by Aileen Schumacher

Travis, Melanie: a special education teacher who shows her standard poodles in dog shows, in Connecticut by Laurien Berenson

Travis, Mike: a newly retired cop, building a charter sailing business in Los Angeles, California by Baron R. Birtcher

Travis, Sheila: a publicist in Atlanta, Georgia by Patricia Houck Sprinkle

Treasure, Mark: a merchant banker in London, England by David Williams

Tregar, Jane: a corporate headhunter in Toronto, Ontario, Canada by Ellen Godfrey

Tregarde, Diana: investigator of unnatural event in Hartford, Connecticut by Mercedes Lackey

Treloar, Gabe:  a burned-out LAPD veteran on the way to a PI job in Cleveland, ends up in his old hometown, Monticello, Ohio by John Maddox Roberts

Trenka, Betty: a businesswoman in Connecticut, USA by Joyce Christmas

Trent, Philip: a journalist in London, England by E. C. Bentley

Tretheway, Albert V.: Inspector in 1940s Canadian police officers in Fort York, Ontario by A. E. Eddenden

Trethowan, Perry: Scotland Yard inspector in London, England by Robert Barnard

Trevellyan, Nick: detective inspector in Hop Valley, England by Susan B. Kelly

Trevelyan, Rose, painter and photographer in Cornwall, England by Janie Bolitho

Trevor, Carole: a private investigator by Judson Philips

Trevor, Hannah: a midwife in Rufford, Maine just after the Revolutionary War by Margaret Lawrence

Trevorne, Kate: an English professor in Michigan by Paula Gosling

Trewley, Detective Superintendent: a village detective in Allshire, England by Sarah Mason

Trumbull, Victoria: an astute 92-year old Vineyard native and deputy police officer, in Martha's Vineyard, Massachusetts by Cynthia Riggs

Tryon, Glynis: Librarian and suffragette in Seneca Falls, New York by Miriam Grace Monfredo

Tucker, Aaron: a former investigative reporter and aspiring screenwriter, in New Jersey by Jeffrey Cohen

Tucker, Coleridge: part of a James Bond-like trio in London, England by Ivor Drummond

Tucker, Flap: a finder of lost things and a private investigator who uses meditation instead of a gun in Atlanta, Georgia by Phillip DePoy

Tunet, Torrey: a 28 year old translator from Boston, Massachusetts by Dicey Deere

Turner, Paige: a mystery novelist and crime reporter, and a Korean War widow, in 1950s New York City by Amanda Matetsky

Turner, Paul: a gay police detective in Chicago, Illinois by Mark Richard Zubro

Turner, Peggy Jean: the mayor of the New England town of Cobb's Landing by Kate Borden

Turner, Sam: a private investigator in York, England by John Baker

Turner, Samantha: medical examiner in Sheridan, Wyoming by Marsha Landreth

Turnipseed, Anna: part Modoc and part Japanese, a FBI special agent in New Mexico by Kirk Mitchell

Twain, Mark: 19th century American author in North America by Peter J. Heck

Tweed: a British secret agent written as by Corbin Forbes

Twotoes, Tommy: by David Alexander

Tygart, Mary “Ike” : television news producer in New York, New York by Polly Whitney

Tyler, Morgan: a 30-year-old widow, the head writer of the daytime drama “Love of My Life” in

Tyree, Anna by Dave Pedneau