'Grimm' sucks in another 'True Blood' cast member

Some might consider changing from a fairy to a sheep to be quite a demotion, but for Kristina Anapau it represents a chance to broaden her horizons. Anapau, who portrays fairy Maurella on the HBO hit "True Blood," is reported to have joined the NBC series "Grimm" this fall in a guest-starring role, according to TV Line.

The actress is not the first "True Blood" cast member to have a run-in with Portland Police Bureau's Detective Nick Burkhardt. Jessica Tuck, the actress who portrayed head of The Vampire Authority Nan Flanagan on the HBO smash also took on a role in the cop drama-meets-fantasy series, playing Catherine Schade, mother of recurring hexenbiest Adalind Schade.

Anapau appears to be taking on a decidedly different role than her "True Blood" co-star, playing Megan Marston, a quiet, reserved secretary who is actually a sheep-like creature dubbed a Seelengut. The episode, entitled "Good Shepherd," is based on the classic fable of the wolf in sheep's clothing.

Since debuting in October last year, "Grimm" has been one of NBC's most surprising and promising new hits. Despite mixed critical reception, the series has garnered a cult-following thanks to its unique premise and strong cast.

Genre fans: what dainty fantasy creature should Anapau play next?