Black Phone is a thrilling new horror film from director Scott Derrickson that stars Ethan Hawke as the menacing Grabber, a character who thrives on taking small boys into his terrifying basement and toying with them until he strikes. It's a hard film to watch, but one that ultimately has an ending that leaves the audience cheering for Finney (Mason Thames). Talking with The Hollywood Reporter, Derrickson elaborated on some of the decisions that went into certain choices — such as the scene where Madeleine McGraw's Gwen is beaten by her and Finney's father — but he also gave some insight into a change to the ending of the film.