Yes, killed him, a death Jack had witnessed on a grainy black & white set and had seen in his mind's eye every moment since. It was so ingrained that, even if Jack closed his eyes, he could see that monitor and Ianto as his life was slowly snuffed out.
Fucking bastards.
"Didn't have to tell me. I watched it," Jack hissed. "So don't tell me I don't know what I'm talking about because I fucking saw it."
Jack growled as the clone sat down on the floor. "What fucking part of 'get the fuck out of here' didn't you understand the first time?" Jack's patience was already paper thin and was continuing to wear -- that paper was almost see-through now. "There's nothing wrong with my abilities but if you think you're getting into my head? You've got another fucking thing coming, Jones. So why don't we just forgo this and you get out of here and leave me to my gr--" Jack cut off abruptly. No, not giving that away to the clone.