We did talk to him last evening about sleeping through the night, that daddy can't come in there every night, etc., but that sure didn't work! He still can't really articulate why he's scared. We're surmising it's from nightmares. He always complains about shadows & "shadows talking." It's usually around 1:00 or later, though, so it does come after he's fallen asleep just fine.
We're just kind of at a loss b/c we're not going to leave him alone in there when he's terrified. I mentioned one time in a recent post that I still remember my mom never letting me in bed with them when I was terrified. (She was then & still is rigidly anti-co-sleeping, a position I don't share. It just happened to work out fine for us & for our boys to have their own rooms.)
I have no real complaints about my parents, but I do still remember kneeling on her side many times, terrified. Then before too long she would take me back to bed. Ugh. She never stayed with me & I couldn't stay with her, & I was still scared from my dream. So needless to say, I feel kind of stuck here, as we won't leave our boys like that when they're scared.