Reaching the end of the wall...there's not really anywhere else to go. If there were anything hidden in this room, it probably would have been here. So either Sinclair missed something crucial or it's just plain not here.

He turns around to check out Jack's progress, and there's definitely more happening on that side of the room than on his. He gives the length of the wall one last skim for good measure and rejoins Jack.

Jack, who is looking at the door in his way like it caught him stealing two Silver Eagles from a cash register in an ice cream shop in a parallel universe.

"...We going in there?"