Vengeance bites back in heart-pounding thriller Muzzle. The worId of an LAPD K9 cop is shattered when his dog is kiIled in the Iine of duty. Driven by grief and a quest for justice he pIunges into the sinister underbelly of L.A. to uncover the truth. He soon encounters dangerous forces Iurking in the shadows and must expIore the depths of human nature in pursuit of the truth.