S4·E18 Thicker Than Water

After a young Mafia lawyer and his wife are murdered in their home, Cory catches up with the unharmed six year old boy who's on the run with his real mother, a stripper with whom the Mafia lawyer had a previous affair. Cory is reluctant to bring the pair to the authorities after she learns that the FBI agent working the case is actually the man that the boy identified as the killer who came to their home.