ROCK BAND SAVE FERRIS GUEST-STARS - During a freak December heat wave, thoughts turn to romance as Michael (Brendan Fehr) and Maria's (Majandra Delfino) relationship gets steamy, Isabel (Katherine Heigl) and Alex (Colin Hanks) share a hypnotic dream-dance while the rock band Save Ferris gives a live performance of their hit "Let Me In," and Max (Jason Behr) and Liz (Shiri Appleby) give in to their mutual attraction and share a first kiss. Later, when a rave party turns wild, Sheriff Valenti (William Sadler) arrests Liz and Alex, and Liz uses their time in jail to finally tell Alex the truth about the aliens. Nick Wechsler also stars. Patrick Norris directed the episode written by Jason Katims