Warning: This article contains spoilers for Apple TV+'s The Changeling.

The Changeling episode 4 suggests that William may not be human, as he shows no signs of pain or injury after being brutally beaten. William has been consistently lying to Apollo, with discrepancies in his stories about his wife and daughters, indicating he may have done something terrible to them. The Wise Ones despise William because he has likely manipulated and harmed his wife and daughter, and may have switched babies with evil supernatural creatures, including Apollo's son.

By ending on an ambiguous note, The Changeling episode 4 leaves viewers with two intriguing questions: Is William human, and how Apollo's present connects to his mother's past? The Changeling episode 4 begins with Apollo and Patrice striking a deal with William to sell him their rare copy of To Kill A Mocking Bird. However, while they are at it, William somehow gains Apollo's...