Bewitched - Season 7 Episode 8
Samantha's Old Salem Trip

The Stephens come home, only to have Esmerelda blink Samantha back to Salem- circa 1600s! Darrin has to go back in time and bring Samantha, who has no memory of who he is, back home. He has to place a coin on Samanthas head and have her say an incantation so she can remember again. He tries to get her attention and ends up getting accused of witchery! Samantha puts two and two together and goes along with the incantation.