Murder in the Family

Murder in the Family is the Christmas episode of Diagnosis Murder that aired on CBS on December 12, 1996.

Plot
Mark is pleasantly surprised by a Christmas time visit from his daughter Carol Sloan Hilton after 8 years but immediately notices bruises. She tells him she was hit but just wants out of her marriage with truck driver Bruce Hilton, whom Mark never liked, and is taken home where once so protective brother Steve isn't happy with the reunion. Just when Carol leaves, Steve calls Mark, Bruce was just found shot dead, his fat wallet wasn't robbed while the killer(s) clearly ransacked his motel room looking for something, as Carol's home is soon after. LAPD Detective Emma Lopez is officially put on the case in his place, but Steve sleuths on and gets knocked into hospital. Toxic traces suggest the trucking firm, where soon another poison death occurs, is involved in illegal waste dumping and Bruce was a blackmailer.