C. Thomas Howell

C. Thomas Howell will guest-star on Grimm this season, TVGuide.com has learned exclusively.

TV shows we're losing this year

The Southland and Criminal Minds alum will play FBI agent Weston Steward in Episode 18. Because of his experience and capability, Prince Vikton (Alexis Denisof) views Weston as an invaluable resource when stateside issues need to be handled swiftly and precisely.

Grimm returns Friday, Feb. 28 at 9/8c on NBC.