The Simpsons (1989): Season 24, Episode 4

24 - 4: Gone Abie Gone

Grampa escapes from his retirement home, and when Homer and Marge frantically try to track him down, they follow clues that reveal secrets in Grampa's past. They find that he worked at a local restaurant with Marvin Hamlish and met and fell in love with the restaurant's singer Rita LaFleur. Meanwhile Lisa tries her hand at online poker, getting tips from the experts, including Jennifer Tilly but is soon gambling with her college fund. Blackboard: 'I will not concede the election until Karl Rove gives me permission'.