Scully and Mulder search for a murderer who is half-man and half-beast with an appetite for human flesh.
Mulder and Scully pursue the Flukeman - a murderous genetic mutation lurking in the New Jersey sewer system.
The agents' pursuit of a man who seems to possess strange powers leads to the discovery of a dangerous secret from Mulder's past.
While probing murders in a Southern town, the agents find evidence of modern-day cannibalism and its links to eternal life.
Hook helps Regina with a plan to transport her and Henry back to Fairytale land; Emma grows increasingly suspicious of Tamara; the queen asks Rumplestiltskin to transform her so that she can kill Snow White.