This is one of the best shows I have seen in a long long time.
It could have slipped into one of two holes. It could have been an action packed shoot 'em up which rarely works well on the small screen and probably wouldn't have been very believable. Alternatively, it could have turned into an overly detailed and consequently tedious procedural show. It manages to steer a path between the two. The show is based on a real life Toronto police unit similar to SWAT but with their own integral negotiators. This is a brilliant set up because every episode can go either way with a brutal violent conclusion or the culprit talked down peacefully. The issues are dealt with in a mature and considered fashion which rather excellently means that the person with the gun is not always the baddy.
The team is rather more imaginatively put together than in most similar shows. The team leader (Enrico Colantoni) is the cuddly negotiator whilst two bullet headed middle-aged men (Hugh Dillon and Michael Cram) are his subordinates. They have similar but different home lives and chat through raising teenagers on the way to work. A black junior policeman (Mark Taylor) and an Italian junior policeman (Sergio di Zio) have minor roles but occasionally get their moment in the limelight and both rise to the challenge when they do. David Paetkau plays the ex-special forces sniper who has transfered in. His difficulties integrating and changing his focus from killing to resolving the situation are well handled and his dark back story is mercifully not as overblown as it easily could be. The last team member is Amy Jo Johnson (the only american on the cast) who is the beautiful woman who has to struggle to maintain her position on the team.
Each show starts with a quick introduction to a perilous situation and then winds back a few hours to see how the problem started. We then build up to the point where police must start making life and death decisions. There is one running storyline which revolves around the actions of one of the cops in the first episode but generally these are self contained stories.
Okay there is the odd cliche. There are a few moments when the team storm in demand police leave their control rooms without bothering to get a briefing, the inevitable will they won't they is a little cheesy but forgiveable. I don't know enough about policing to say with any authority how accurate this is but Colantoni's brother is a Toronto cop which may have made a difference. There's regular use of police venacular (some of it pretty hamfisted but usually well done) and lots of gadgets.
Overall, I love this show. It's entertaining intelligent and I liked that I didn't know which way things were going to go in a lot of the episodes. Highly recommended and I can't wait for the next two series.