Question: who was the tree in a monster calls
Answer: The film stars Sigourney Weaver , Felicity Jones , Toby Kebbell , Lewis MacDougall , and Liam Neeson , and tells the story of Conor ( MacDougall ) , a child whose mother ( Jones ) is terminally ill ; one night , he is visited by a giant tree - like monster ( Neeson ) , who states that he will come back and tell Conor three stories .