BRAVE NEW WORLD - Liz (Shiri Appleby) and Max (Jason Behr) try to adjust to the new reality of the deep bond that has been growing between them since Max used his otherworldly powers to save her life, even as Liz does her best to continue her now awkward relationship with her summer romance, Kyle (Nick Wechsler). Michael (Brendan Fehr) is obsessed with the newfound knowledge that another alien was known to exist in Roswell in 1959, and goes to dangerous lengths to find the meaning behind a disturbing vision that he can only see in flashes. Meanwhile, a suspicious substitute teacher (guest star Julie Benz, "Buffy the Vampire Slayer") has everyone on edge, and Sheriff Valenti (William Sadler) is frustrated when the FBI interferes with his investigation. Katherine Heigl, Majandra Delfino and Colin Hanks also star. David Nutter directed the episode written by Jason Katims