Though Hugh Sheehy's often tragic, sometimes gruesome stories feature bloodied knives and mysterious disappearances, at the heart of these thoughtful thrillers are finely crafted character studies of people who wrestle with the darker aspects of human nature--grief, violence, loneliness, and the thoughts of crazed minds.

Sheehy's stories shine a spotlight on the bleak fringes of America, giving voice to the invisibles who need it most. A dismal assistant teacher spiking her coffee after school is suddenly locked in a basement with a student who has just witnessed his father's murder. A...