Jack runs as flat out as he can manage with his whole face aching - Ianto has one hell of a punch on him when pissed, apparently - trying to catch up to him before he runs right into his girlfriend and sure electrocution.

"Ianto! Stop!" he yells, voice echoing around the plaza.

"She can't have survived that attack," Gwen calls from just ahead, but keeps running.

"I used my initiative!" yells Tosh, trying to keep pace. "I'm sorry!"

"When I want you to think for yourself, I'll tell you," he growls back, failing to apply diplomacy to the situation. Again.

"Maybe if you'd told me your plan, I wouldn't have done it!" she tells him crossly.

Ianto isn't stopping, and he's a long way in the lead. All they can do is follow him into the office - and find him with a gun levelled at them as they get in. Gwen and Owen stop, shifting to one side to let Jack get in.

"Ianto, don't be stupid!" Gwen starts.

"I've nothing left to lose," he replies, breathing rough, eyes bright with fury and grief.

"There's always something left to lose," Jack says, and gets a gun aimed directly at him for his trouble.

Ianto is trying visibly to sound cold. "I'm going back in to save her. Anybody tries to stop me, I'll shoot them."

"Ianto, put the gun down..." Gwen tries, and Jack moves. He steps forward, grabs Ianto’s wrist with one hand and twists his arm down and back, forcing him to drop the gun, and pushing him one-handed but hard against the wall. His own gun is out and the muzzle at Ianto’s cheek in a second or two without a shot being fired.

"You make a threat like that, you better be prepared to follow it through," he says grimly. "See, you disobey me now... I really will shoot you."

Ianto struggles ineffectually. "Get off me!"

"You wanna go back in there?" Jack asks, voice deceptively level. "You go in to finish the job. If she's still alive, you execute her." He loosens his grip enough to shift the younger man to face him. He looks horrified, shaking his head.

"No way."

"You brought this down on us. You hid her. You hid yourself from us. Now it's time for you to stand as part of the team."

He feels a tentative touch on the back of his shoulder. Gwen, following police training under entirely the wrong circumstances. "Jack..." she says, and he speaks over her voice.

"The girl you loved has gone," he tells Ianto. "Your loyalty is to us now."

"You can't order me to do that."

Jack's voice is almost a growl. For now, while he's this angry, he can and he will. "You execute her or I'll execute you both!"

"I won't do it. You can't make me. You like to think you're a hero. But you're the biggest monster of all."

Wrong. Jack knows exactly what he is. He just knows that he can't stop. Because if he stops then everything dies. "I'm giving you ten minutes," he says. "Then we're coming in."

He's itching to just knock Ianto out and sort this out over his head. But... "Pick it up," he says softly. Ianto reaches down and picks up his gun. He looks at them, then turns and disappears silently into the corridor.

"How can you ask him...?" Tosh breathes.

"I don't need your opinion!" he snaps.

Which means: I don't know. I don't know when I became someone who could force people into something like that.