To some, the members of the bomb squad are more than a little left of normal. After all, when everyone else is running away from a bomb, they're heading toward it. In this line of work, precision, knowledge and nerves of steel are requirements - especially when a serial bomber makes the team his next target. Hannah Crosby and Quinn McNichol are perfect for each other - everyone thinks so. But sometimes being perfect isn't enough. Hannah wants more. Marriage, children, a future... Quinn doesn't think marriage - let alone children - is a good idea. He can never forget the dangers that people in their profession face every day. What happens if one of them doesn't come home one night? And now it seems as if a bomber is trying to help them answer that question.