Bewitched 8x17

Serena visits Samantha because she is stripped of her powers. She then falls for Darrin's newest client Harrison Wilcott and decides to go out with him. Samantha tries to tell Wilcott that Serena is bad news, but Wilcott has fallen for Serena. So Samantha finds Countess Pirhana (who took away Serena's powers) and makes Wilcott fall in love with the Countess.