Shamans, after the Heart. Shamans have he Heart, Ianto corrects himself, a little bitterly, because there's no point in denying the facts. They've definitely taken it, and the fighting was just a decoy while they carried it off. He'd tried hard to protect the carriage but he's no guard. He's just an archivist, an admin. This really wasn't how things were supposed to go.

Oh, he's got a bad feeling about this alright. Especially because John sees fit to mention the fact that the shamans are interested in dragons and that the heart is still beating.

"You're not saying..." Ianto starts, before trailing off, shaking his head. No, it's ludicrous. Not only that but. "How long has that thing been just sitting around in a vault somewhere gathering dust and they're going to try to -- use it?" He studies John's expression with dawning horror. "...bring it back?? No, they -- but it's just a heart!" A creepily beating one at that but. You would need more than that. Wouldn't you?