The Simpsons Season 34 Episode 8

Step Brother from the Same Planet

Homer is stunned by his feelings of rage and resentment when Grampa becomes a doting stepfather to his girlfriend's quirky young son. Lisa and Bart throw the ultimate slumber party.

Guest Stars

Melissa McCarthy

Calvin (voice)

Carol Kane

Blythe (voice)

Pamela Hayden

Milhouse (voice)

Grey DeLisle

Sherri / Terri / Martin Prince (voice)

Chris Edgerly

Springfield Retirement Home Receptionist (voice)