Three women are murdered in identical and very unusual ways. The killer is solicitous - first breaking their necks, then tucking them neatly into bed before cleaning the house and tending to the pets. With no trail to follow - since the killer insists on straightening up the mess - Fort Worth Detective Deb Ralston looks beyond the scrubbed floors to discover the victims were all members of Mensa, an organization for the super-intelligent. Deb quickly discovers that the group's members are not all as sane as they are smart. It's certainly unsettling, because it looks as though a killer with a dirt fetish may just decide to clean Deb Ralston's house next!