A series of ATM explosions end in several deaths, the team have trouble identifying a baby killed in the blast.

After discovering that Simon didn't sign his gun into the gun safe before he went on holiday Bernice asks Claudia to do a covert investigation on Simon to check his stability on the job. Meanwhile, the team investigate the death and dumping of a council worker in a submerged car and find links to a housing estate on contaminated soil and a private investigator who was silenced. The investigation leads Simon to be suspended after the alleged culprit falls from his building.