Law & Order: Criminal Intent - Season 4 - Eps 18: The Good Child
After Dennis and Camille Burnett are found dead in their home, the only survivor is their twenty-year-old daughter, Rachel. Goren and Eames initially suspect that someone connected with the Marinko family had the Burnetts killed, since they were in witness relocation, but the detectives soon realise that the connection isn't the parents, it's the daughter. Suspicion then turns to the daughter's biological parents and her birth father's very jealous wife.
About Law & Order: Criminal Intent

Title: Law & Order: Criminal Intent
First Air Date: 2001-09-30
Last Air Date: 2011-06-26
Status: Ended
Rating: 7.571/10 (from 354 votes)
Language: EN
Seasons: 11
Total Episodes: 195
Network: NBC USA Network
Genres: Drama
Production Companies: Wolf Entertainment, Universal Television, Studios USA
Synopsis
The third installment of the “Law & Order” franchise takes viewers deep into the minds of its criminals while following the intense psychological approaches the Major Case Squad uses to solve its crimes.
Cast

Vincent D'Onofrio
Robert Goren

Kathryn Erbe
Alexandra Eames

Julia Ormond
Paula Gyson

Jay O. Sanders
Joseph Hannah