Ichiro, Sano: a samurai and private investigator for the shogun in Edo, Japan by Laura Joh Rowland

Ikmen, Cetin: a policeman in Istanbul, Turkey by Barbara Nadel

Iles, Desmond: detective constable in an English seaport by Bill James

Ingram, Nelson: a burnt-out reporter  back-digging up the dark criminal secrets that hide beneath the sleepy surface of Litchfield, Alabama by Stephen J. Clark

Isaac, blind physician in 1350s Girona, Spain by Caroline Roe

Ives, Hannah: a breast-cancer survivor and a down-sizing victim in Annapolis, Maryland by Marcia Talley

Ivory, Kate: a novelist turned amateur detective in Oxford, England by Veronica Stallwood