Big Bang Theory

A bomb blast rips through an ATM destroying a crowded shopping strip and takes the lives of three innocents. Are they collateral damage in a heist gone wrong? Or has this messy act been designed with a specific target in mind? The victims are a Credit Union employee who made some bad financial calls, the wife of a crim and an unknown baby. Three unrelated strangers, resulting in an endless trail of suspects. Careless thieves are the obvious perps in these unnecessary deaths. But something isn't adding up, and the team struggles to deduce intent and motive. The bombing investigation must be put aside by Duncan and Matt when they are pulled onto another Homicide. A John Doe, brutally asphyxiated and stuffed into a bag. So badly decomposed that not even fingerprints can be found. Finding an identity for the victim is the first step but will this raise more questions than it answers?