Castiel looks at Claire, the concern evident in his eyes. She looks back, confused for a moment, and then whispers a single word.
"Yes."
Angelic light fills the room, and Crowley watches in horror as Castiel's essence transfers from his current vessel to that of the young girl. Claire's eyes flash white, and with an outstretched hand she touches the forehead of the demon holding her. Flames burst from his eyes as he falls to the ground, leaving a trail of smoke from the empty sockets. Claire falls to her knees as Castiel rises before Crowley, grabbing him by the collar of his suit and pulling him close.
"It seems you've learned a trick or two," Crowley says, unable to escape from the angel's grasp.
"Yes. I have. Now, you will release Sam Winchester's soul," he whispers in Crowley's ear.
"You heard him," Crowley calls out to his minions.
One of the two remaining demons runs off to carry out the order, as the other cautiously eyes the door and hopes to escape the angel's wrath. A few moments pass before Sam is led into Hell's Throne Room.
"Hello Cas, " Sam says.