Episode #324 "Take Me To Your Breeder"

When Jimmy fails to show up for an outing they'd planned, Quentin is angry and takes it out on Rick. After a toxic spill at the refinery where Grace inhaled some fumes, she drives home and on her way notices what she thinks is a UFO theme diner. She goes inside, encounters her dead father at the lunch counter and tells him that she still feels sad that he paid so little attention to her when she was a child. Her father disappears, but Grace, after Rick and Wade find her asleep in her car, remembers the encounter and feels more at peace with her father.