1. A nightclub dancer/singer that witnesses a murder and ends up dead. His body gets dumped in a lake at Prospect Park.
2. A nerdy bookworm who is mysteriously drawn to Prospect Park during a trip to the deli (Pint of Prospect Park), where he meets the ghost of his brother.
Kaye does some split-second transitions from one personality to the other when the "ghost" inhabits the nerd's body, and its the kind of thing only Kaye could do.
http://www.imdb.com/title/tt0038260/