John Winchester had gone there alone. And whatever it was he saw, whatever happened, John had turned back. John was a Marine and a veteran hunter. He'd been to other hell gates and those'd been cake for him. Whatever awesome kind of wizard Molly was, and Dean really didn't know, she wasn't going to be that tough. Not from what he'd seen.
"No one should be out there alone," he said. And he meant it. Shit, he didn't even want to go out there alone. He'd lucked out, finding Faith nearby the one time he'd tried it.
The obvious solution was for both of them to go out there. But for once, charging in without a big plan seemed like a bad idea.