Barbi and Jeff Gordon
From the "Amazon Hot Wax" episode (02/16/1979) of television series Wonder Woman.
A Carpenters-esque duo consisting of Jeff Gordon (Judge Reinhold!) and Barbi Gordon (Sarah Purcell!!). Seemingly nice, they turn out to be bad guys who swiped some master tapes of missing, presumed dead folkie Billy Dero to give to blackmailers, who try to get label head Eric Landau (Curtis Credel) to cough up big bucks for 'em. When Dero turns up alive, ruining the blackmail scheme, they incapacitate him with feedback in the recording studio and try to kidnap him.
Wonder Woman sees that they get their comeuppance, natch.