Tony and Cas ended up separating, wanting to cover more ground to find Heather more quickly. Or he'd talked Cas in to it eventually, more accurately. Murdoch-inside-Robin had told Wings how to get them off the ship if they'd been convinced by the Captain they were guests (and what the hell was that about anyway?), but he was sincerely hoping he'd find his wife before that was necessary.
Moving in to another room, hand resting ready on the holster of his gun, his eyes swept over the interior. And it was as she spoke that he saw her.
"Heather." Silently he thanked whatever deity might be listening, jogging up the stairs to reach her. It wasn't til he got to her side that it registered what she was wearing. "Where'd you get the dress?" And then it occurred to him a beat later that she was probably not wearing that for a laugh.