Movie starts with a law enforcement agency attempting to catch a bomb expert in a house. They enter the house and in the basement boobie trapped to a bombe is the lead detective's wife, the only way to defuse the bomb is to shoot her. The agent shoots his pregnant wife and obviuosly becomes a changed man, he is found years later by the team investigating the same criminal. I did not see the end, I would like the title. It was a relatively new made for cable/TV movie.

Deadly Impact (http://en.wikipedia.org/wiki/Deadly_Impact)