As the April 18 episode “New Blood” came to a close, Henry’s visit to L.A. took a terrifying turn as he passed out for unknown reasons, and was then brought to the hospital.
The reason why Emily Deschanel’s Sarah (Nolan?) will make her way back to John’s life is tied to their adult son Henry, as portrayed by Zayne Emory.
In the promo for the upcoming episode, it looks like Henry’s situation will understandably be the main hook, as emotionally discomforting as that may be.