After Malia's death, Liam shifts to being in between the beta and alpha stage. This enhances his anger problems making Liam more hostile. Nobody really knows what this is currently. All the people that did know, are dead. They are dead because someone wanted nobody to know, the truth is too much. That person is still living but that person is someone you'd least expect it to be.

Thomas always had a real connection but he forms one in the Scorch with a 'crank' Brenda. He keeps going back and forth between the two getting hurt, healing from it all, loving and hating. Who will he choose? I recommend you read at least the 2nd book in the trilogy if you only watched the movie

Alice and Bella have been best-friends. After Edward has a sudden change in his behavior, Bella and him drift apart. Making Alice and Bella closer than ever. The two start feeling a little more that friendship.