Guest Stars William B. Davis as Cigarette-Smoking Man Annabeth Gish as Special Agent Monica Reyes Robbie Amell as Agent Miller Joel McHale as Tad O'Malley Lauren Ambrose as Agent Einstein Julian D. Christopher as Dr. Oscar Griffiths Co Starring Sandy Da Costa as Alien Aliza Vellani as Nurse Sandeep Mik Byskov as Accosting Man Darren Dolynski as Man in Suit
