Emil nodded, his lips forming a bit of a frown. "We're trying to find a jewel before someone else does, and it's been driving us kinda crazy." He hoped that was what the Doctor meant, anyway. He wouldn't permit himself to think of any other predicaments he might be in. Emil glanced briefly at the Doctor's hand but didn't pick up on what might be hidden there, instead distracted by that second remark. He murmured quietly, "I don't remember telling you about the Centurion's Cores..."