Olivier Martinez and Agnes Bruckner have signed on to star in MGM/Lakeshore's werewolf film "Blood and Chocolate." Adapted by Ehren Kruger, "Blood and Chocolate" is based on Annette Curtis Klause's novel about a teenage werewolf who has spent her life trying to hide the fact that she is part wolf. She must choose between her love for a human and her family after her relationship with a visiting American threatens to expose her secret. German helmer Katja von Garnier directs. Lakeshore is co-financing and co-producing the picture, which will likely be released through Sony. Lakeshore's Tom Rosenberg and Gary Lucchesi will produce alongside Daniel Bobker. Kruger will exec produce. Bruckner's recent credits include "Haven" and "Stateside." She will also be seen in "The Woods." Martinez' credits include "Unfaithful," "Before Night Falls" and "The Roman Spring of Mrs. Stone." Both actors are repped by ICM.