In order to earn extra money, Tess starts walking dogs, and P.J. helps her because he's excellent with dogs. Cal sees a ghost in the middle of the night, who turns out to be Randy's grandmother. He decides that it's because of the stress of the ""Saltee Pops"" presentation he has been preparing, but when he continues to see the ghost (she even appears on his charts during the presentation), he sees a psychiatrist. It turns out that Cal received a card from his grandmother asking for help a few months ago, and Randy goes with him to visit her at the State of New Jersey Department of Human Services Wilbur Cross Memorial Seniors Facility. Cal finds out that she is a deadhead (which is why her husband left her) and that she wants him to take her to see the Grateful Dead at Madison Square Garden. P.J. has to stop helping Tess because his own dog gets jealous.
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