He's studying the blood, wondering whose it is and what kind of wound it's from. If they're not here then they got away, to one of their worlds, so maybe the hit wasn't bad.

Or maybe one of 'em is dyin' on the otherside of the door.

He's distracted with his own thoughts and X's words don't register until she's already out the door. Turning, he takes a few steps after her.

"Hey!"

He can't stay here. He needs to get back to Kate and Boo and make sure they got to Demeter's world, especially with Ramon still on the loose.

He hates to leave, he wants to help, but he can't risk Kate and Boo. With a silent apology and promise to check in as soon as he can, Bill heads back to the bar.