Luke Dumas Books in Order

An American graduate student confesses to murdering a classmate in Edinburgh, claiming the Devil made him do it. After his death in prison, a manuscript recounting a mysterious ghostwriting job raises disturbing questions about delusion, fear and the truth behind his crime.

Returning to the museum where his sister vanished as a child, paleontologist Simon hopes to uncover what happened to her. Strange sounds, impossible footprints and a lurking prehistoric presence lead him toward a mystery buried far deeper than his family’s loss.

Desperate to change his life, Emmett joins a weight-loss trial that rapidly transforms his body and prospects. Missing time, disturbing cravings and disappearing tormentors make him fear the treatment is turning him into a killer he cannot bear to stop becoming.

Suspicious animal escapes and deaths trouble a major zoo as it prepares to welcome visiting professionals. An executive, a hopeful conservationist and a resentful keeper converge on a single day when an insider’s revenge threatens to turn the attraction into chaos.