NBC's Grimm is new again on April 20 with a new episode titled "Cat And Mouse."
In the episode, Nick has to choose sides when his duty as a "Grimm" conflicts with his duty as a detective. In it, Nick and Hank learn that they have a suspect whose crime wave began overseas. Said suspect might be harbored by Monroe and Rosalee - oops! It turns out this guy is trying hard to escape the clutches of a creature bounty hunter, played by Sebastian Roche, who was a pretty mean hunter as one of the "Originals" on The Vampire Diaires, too.
Bree Turner and Neil Hopkins also guest star. Here are some images that NBC has just released: