D.R.
Sounds like it's time to put him back in the crib (and maybe open the door). I read an article yesterday that some kids aren't ready to move to a big bed until 3 or 3.5 years old. I always thought it was 2 or 2.5. But I guess it depends on the child. And if my child climbed out of bed every night, you bet I would be afraid of more than just banging on a door.