Feet: [s1e21] Big

Larry is suffering from a mysterious condition that prevents him from returning to his human form. This leads Nick and Monroe to , a therapist who has been surgically implanting drug pumps in Wesen patients to suppress their creature side. However, the drug has horrifying side effects, causing the patients to become "stuck" in a violent, feral state. Key Developments

: The episode introduces the Wildermann , a species whose natural appearance is the basis for Bigfoot and Yeti sightings. [S1E21] Big Feet

is the 21st episode of the first season of the supernatural drama series Grimm , which originally aired on May 11, 2012 . Larry is suffering from a mysterious condition that

The investigation begins after stumbles upon a double homicide in the woods. Nick Burkhardt soon discovers that the suspected killer is a Wildermann (a Bigfoot-like creature) and a friend of Monroe named Larry. Key Developments : The episode introduces the Wildermann