Guest Stars Rory Culkin as Kappa Kate Mara as Lana Marama Corlett as Theta Aaron Paul as Cliff Stanfield Josh Hartnett as David Ross Auden Thornton as Jessica Ross Marceline Hugot as Bookshop Clerk Simon Markey as Pastor Billie Sturrock Kewish as Lily Ross Ioachim Clobanu as Epsilon Daniel Bell as Henry Stanfield Charlie Fidelski as Ricky Ross Olen Gunn as Kyle Lydia Cherry as Sally Siân Davis as Sigma