Keep It in the Family by John Marrs is a chilling psychological thriller about Mia and Finn, a couple who move into what seems like their dream home, only to discover it holds terrifying secrets. When Mia stumbles upon a hidden space containing evidence of horrific crimes, the couple’s lives begin to unravel. The story alternates between past and present, revealing a serial killer’s perspective and the horrifying truth about who can — and cannot — be trusted. As paranoia and fear grow, the novel explores how darkness can live quietly inside families, and how loyalty can become dangerous when the truth threatens to destroy everything.