Jack Cassidy guest stars as George Dinsdale, Darrin's newest client. An unregenerate playboy, Dinsdale falls in love with Samantha's lookalike cousin, Serena, and refuses to believe that Sam and Serena are not one in the same. Before she is able to straighten out this mess, Sam is obliged to briefly transform Dinsdale into a parrot. Scripted by John L. Greene, "A Chance on Love" made its first network appearance on March 19, 1970. ~ Hal Erickson, All Movie Guide