Toniiight, a singer friend of MacGyver's is plagued by a series of mysterious accidents. How gaga will Sam & Jeff go for Audrey Landers? Plus, a new friend from Vancouver, Steubon, drops by with sightseeing tips; Jeff sings Billy Joel; Mike drops in for reflections on Back to the Future 2; and Sam tries to get Jeff to "stay straight & stay clean" through the power of song!