Vince's judgment is compromised when a harrowing rescue of two siblings triggers emotional memories of the night his daughter died in a car accident.
While investigating a rural religious cult, the agents expose a sinister experiment involving violent teens and alien DNA.
Weaver discovers a shocking truth about an old friend and must decide how to best protect the 2nd Mass. Maggie and Isabella are forced to work together, while the remainder of the 2nd Mass attempts an escape led by Tom.
