Maggie Grace: Maggie Grace. Actress: Taken. Maggie stars as "Althea" on the popular AMC series "Fear the Walking Dead". She is most often recognized from the hit series "Lost" , "Californication" on Showtime, and the "Taken" and "Twilight" franchises. Maggie has also starred on Broadway in William Inge's Pulitzer Prize-winning "Picnic" directed by the Tony-nominated director Sam Gold . Maggie was named one of Variety's Top 10 Actors to Watch.