Special Guest Stars David Selby as Arthur Foster Sherry Stringfield as Rita Guest Stars Luke Kirby as Hugo Jeremy London as Nate Kathleen Rose Perkins as Julia Marcus Giamatti as Jeff David Shatraw as Dan Anne Ramsay as Sally Rhys Coiro as Jaime's Rebound Brandon Barash as Frank Fred Koehler as Lab Assistant Co Starring Ryan Wynott as Joshua Walker Whitney Cummings as Louise Siena Goines as TBD Kathleen Mary Carthy as TBD Maurice Godin as TBD Joshua LeBar as TBD Jaime Aguirre as TBD Anthony DeSantis as Michael Jim Jansen as TBD