Episode 8 of "Roswell"
s01e08 Blood Brother
Title: Blood Brother
Original Air Date: 11/24/1999 on UPN
Director: David Nutter
Writer: Barry Pullman, Breen Frazier
Guest Stars: Robert Neary (Agent Moss), Joe Camareno (Paramedic #1), Zack Aaron (Heavy Metal Kid), Richard Anthony Crenna (Agent Baxter), Hilary Shepard Turner (Nurse Susan), Victor Campos (Mr. Bruckner), Eric Jungman (Lester), Paul 'P.J.' Palmer (Paramedic #2), Kevin Calisher (Bob), Jonathan Nichols (E. R. Doctor)
Plot Outline:
Max is injured in a car accident and Liz pressures Alex to help protect him from medical procedures that could expose his identity by providing blood samples to replace Max's.
