The eighth in a stylish new series of novelizations of classic episodes from the phenomenally successful cult TV show The X-Files created by Chris Carter.

FBI agents Fox Mulder and Dana Scully investigate the eerie unsolved mysteries the FBI want handled quietly but quickly, before the public finds out what's really out there... and panics. The cases filed under 'X'.

When Fox Mulder is sent to investigate a body that has been found floating in the sewers of Newark, New Jersey, he's insulted by the ordinary nature of the case. But when several sewer workers are attacked by a vicious sludge-dwelling monster, Mulder believes that something sinister is at work.

He and his partner Scully soon find themselves on the slimy trail of a creature that is as disgusting as it is dangerous. Half-man, half-parasite, it has been attacking humans, and leaving its larvae behind to feed on their flesh. Mulder and Scully must find out where the creature came from and put a stop to its reproductive killing spree...