Black Dynamite (2012)

S2E20 Grandpa’s Lost Wife

In Sioux City, Iowa, a woman has put out a reward for the return of her missing husband, who turns out to be Grandpa. Despite Grandpa insisting he doesn't recognize her, everything changes when he learns about her immense wealth. Suddenly, he becomes eager to declare her as his wife by signing an affidavit, revealing his true motives.