We camper host and a woman got locked in over the summer. Her husband took the kids to the movie for a couple hours and locked the door when he left. The wife was able to unlock the dead bolt but couldn't unlock the other one. The one that locks the latch doesn't have a lever on the inside. My husband got the key from her husband and unlocked the door. He gave the key to her and when the husband asked if he got her unlocked and could have his key back - he suspected he might be sleeping on the ground outside for the night.