Season 1, Episode 21 Joining

First Aired: May 11, 1998

A renegade alien with the ability to take on human identities arrives to destroy the Taelons; Beckett (Kari Matchett) suspects Lili (Lisa Howard) is working for the liberation. Boone: Kevin Kilner. Sandoval: Von Flores. Doors: David Hemblen. Da'an: Leni Parker.