In 2002 Maher Arar was introduced to torture by a Syrian colonel. He was tuned up pretty good.
Arar thought he was coming home to Toronto. The RCMP and the CIA thought otherwise. The RCMP volunteered some spurious information to the CIA. The Americans figured Arar could use a bout of "special rendition" and delivered him into the hands of the Syrians in order for him to be tortured. That Syrian guy? He was the CIA's instrument for torturing Arar.
Eventually we got Arar back, paid him a bunch of money, and just hoped the whole thing would go away.
Now, however, the RCMP has charged that Syrian colonel with torture and is seeking his extradition. Good luck with that. I don't think that Bashir Assad is in any mood to do Canada favours right now.
So why aren't we charging the culprits on our side of the ocean, the guys who facilitated Arar's torture? Oh yes, what am I thinking? That road leads back to the RCMP.