Each play is an absurdist take on marital infidelity, one instance set on the Upper West Side of Manhattan and the other in Old Saybrook, Connecticut. "Riverside Drive's" Fred Savage, a homicidal, paranoid, schizophrenic vagrant ex-copywriter, has been stalking a screenwriter for weeks, convinced that his prey stole his idea - in fact, his life - to create a successful movie plot. In "Old Saybrooke," an orthodontist is hosting her sister and golf-mad brother-in-law, a plastic surgeon, at her grand suburban house. When a couple who once owned the building stops by, they spark an old fashioned sex farce that is full of verve and cunning.