(your Eddie) you and Richie were together in the sewers, looking for Pennywise. You hear a noise and turn around timidly. When you go to look back at Richie he was gone

you look around the sewers and about 30 minutes later you find Richie under the effects of the deadlights; levitating and his eyes pure white. From what you know the deadlights make you see horrible things until it's broken... You just don't know how to break someone out of it..