The Mod Squad/Taps, Play It Louder
A cousin that Julie has never met shows up at her doorstep. She went to meet her brother, a soldier returning home from Vietnam, at the bus stop, but no one got off the bus. Linc goes to South Dakota to visit his parents, while Pete does some digging and finds out the man works at the docks. The parents come to visit their son, but there's one problem...the man who claims to be their son is an impostor.