John McMahon

John McMahon is an American crime fiction author who debuted with *The Good Detective* in 2019, the first novel in his Detective P.T. Marsh series. Before turning to writing, McMahon worked in advertising for over two decades. His novels are set in the American South and feature morally complex characters navigating corruption and personal demons. McMahon's taut prose and atmospheric storytelling have drawn comparisons to authors like Michael Connelly and Dennis Lehane. *The Good Detective* received critical acclaim for its gritty realism and psychological depth, establishing McMahon as a significant voice in contemporary crime fiction. The series continues with *The Evil Men Do* and subsequent installments exploring similar themes of justice and redemption.