Unconventional psychologist Gerry "Fitz" Fitzgerald (Robert Pastorelli) is one of the best police interrogators in the business -- mostly because his own quirks and perversities help him get inside the criminal mind. Mariska Hargitay, Josh Hartnett, Angela Featherstone, and R. Lee Ermey co-star in this ABC drama series based on a popular British mystery series by the same name (originally starring Robbie Coltrane).