Episode 4

291045 is the forth episode of The Promised Neverland anime, released on January 31, 2019. 291045 is an adaptation of the manga of the same name.

Summary
Emma, Norman and Ray suspect that there's a traitor among the kids providing information to Isabella. They decide they want to tell Don and Gilda the secret of the House, while suspecting that one of them could possibly be the traitor.