Jeff receives news that one of Nate's friends might be planning something at an upcoming Cult fan costume party – so Jeff and Skye attend the party dressed as Billy and Kelly. At the party, Skye's drink is spiked with a hallucinogenic drug similar to a drug used on the television show. Detective Roselyn Sakelik (guest star AISHA HINDS) warns Jeff that he might be in over his head. Also, at the party, Roger meets mysterious stranger named Stuart (guest star JEFFREY PIERCE). Meanwhile, on the television show, Kelly marries Billy in a flashback scene.