Cape Fear, by John D. MacDonald

Start with the original. The details are different—Sam Bowden helped put Max Cady into military prison during World War II, for example. But MacDonald’s brilliantly simple premise is the key: Bowden, a buttoned-up member of society in good standing, slowly realizes that the cunning Cady can’t be stopped via the system. For all his connections, education, and moral code, if he’s going to protect his family from a madman, he’ll have to do things he never thought himself capable of. That friction is dynamite, and the novel is still a crackling read.