Castle
S5 E18 The Wild Rover When a man is found dead in an industrial cake mixer, Castle and Beckett trace the murder to an Irish gang in Staten Island and a beautiful bar owner named Siobhan O'Doul.
Diagnosis Murder
S7 E16 Teacher's Pet When a man is found murdered at Dr Sloan's home, the man's wife testifies that a gang of robbers broke into the house and killed him. However, details of an extramarital affair soon begin to emerge and contradict her version of events.
Diagnosis Murder
S7 E17 The Unluckiest Bachelor in L.A Steve meets the girl of his dreams on a TV dating show, but she is mysteriously killed in a hit-and-run car accident days later. Dr Sloan's investigation leads him back to the victim's brother who turns out to be one of his hospital colleagues.