It's been a few weeks since Darrin demanded that Samantha stop using witchcraft, so now is as good a time as any for him to renew that demand. Petulantly, Sam agrees, just when everything goes wrong as Darrin tries to impress his new client, Dwight Sharpe (Arthur Julian). Watch for the great shot of Endora sitting on a cloud as she takes care of Tabitha. Written by Lila Garrett and Bernie Kahn, "To Twitch or Not to Twitch" originally aired on March 14, 1968. ~ Hal Erickson, Rovi