A trailer explodes, killing a man and a woman. The neighbors in the densely populated trailer claim to have seen nothing. The team, reunited, investigates the crime scene and finds suspicious tire marks as well as paint transfer from a car all over the place. Catherine and Warrick are pulled away from this case when a dead body of a scantily-dressed woman is found in a bad neighborhood. While on this case, Catherine finds out that Warrick is married. Back at the lab, Grissom receives an audio tape from Nick's kidnapping case. On it, there is evidence suggesting that the perpetrator had an accomplice.