Deciding the Circle needs to have a little fun, Faye convinces Cassie to throw a big Halloween party. Intent on wooing Jake (guest star Chris Zylka) back, Faye goes all out on her Halloween costume. After a fight with Diana, Adam turns to Cassie for advice. Meanwhile, some dangerous, uninvited guests set their sights on the Circle.

Cast: Britt Robertson, Thomas Dekker, Gale Harold, Phoebe Tonkin, Shelley Hennig, Jessica Parker Kennedy, Ashley Crow, Louis Hunter, Natasha Henstridge, Richard Harmon, Chris Zylka