All comics have a backstage area. Even realistic ones in which the panels can't be pulled down.
Jane: Huh? Where did he go?
Fred: So, you're saying we can get out of the comic through here?
Bob: It's a comic. We can slip through here behind the panels, and run through the backstage area until we find an exit.
Bob: Come on!
Fred: Okay. Where do we go now?
Bob: Let's try this way.
Fred: Hmm. Nothing.
Bob: Nothing over there either.
Fred: Perhaps if we had some light? It's kinda dark back here.
Bob: Maybe we could use a candle? Unless there's a light switch?
Jane: The switch is by the door, on the left.
Fred: Oh, thanks.