The Apes of Wrath is the fourth episode of Garth Marenghi's Darkplace
Workers at Darkplace Hospital begin to turn into apes, and it is discovered that the water source is contaminated. The source of contamination is discovered, and it turns out to be an evil ape urinating into the water coolers. Thornton chases the ape, eventually capturing him.
Julian Barratt as Padre
and guest starring
Noel Fielding as the head ape