Who Shot Jay Arnstein?

S1 E5: The Feds make a lot of promises in exchange for testimony, not all of them moral, and it's the Marshals who are stuck with the consequences. When art dealer Jay Arnstein goes into the witness protection program, he asks that his wife, Marci, be moved with him, as well as his mistress, Kay. The rules force Mary to keep this from Marci, a very sweet woman with whom she has an immediate bond. Things might have gone on like that forever, but when Jay is shot late one night at the gallery, everyone's secrets are forced out into the open.