EXCLUSIVE:  The Red Riding Hood star and the Grey’s Anatomy star are set to be unexpected parents in Wonderful Tonight. The romantic comedy with Amanda Seyfried and Patrick Dempsey will be directed by Christine Jeffs from a script by J. Mills Goodloe. Wonderful Tonight follows a one-night stand that not only leads to a baby but a stand-off between the two sudden parents about what they want from each other and themselves. Martin Shafer and Liz Glotzer will produce for Castle Rock Entertainment with Donna Roth and Susan Arnold. Myriad Pictures’ President/CEO Kirk D’Amico will serve as Executive Producer. Myriad is handling the financing and worldwide rights to the film. They will be pre-selling Wonderful Tonight this week at AFM this week. Christine Jeffs and Patrick Dempsey are repped by UTA. Amanda Seyfried is repped by Innovative Artists.