Each member of the team is brought together by two separate cases and as the investigation progresses, they discover that the same murder weapon was used for both cases, in two very different sections of Detroit.
The first victim is an 11 year-old boy playing video games in his living room. He is felled by a stray bullet through the window from a drive-by shooting. The second victim is a wealthy and recently retired auto industry exec from the upper crust Boston/Edison neighborhood. He is shot twice in the foyer of his mansion.
Source: dbenton