Charlie alerts SWAT when forensic tech Sarah Truong manages to send him a brief text while she and all staff are held at gunpoint by a man who intruded the high security lab where her college friend and senior scientist Sebastian Todd do research, even on super-dangerous viruses, yet is only interested in the files on an aborted drug test, which he believes wrecked his family.Charlie gets hep to train Rex for a unique solo-intervention, interacting with Sarah. After hostages are hurt and the dog's collar camera is discovered, Charlie goes in as paramedic.
—KGF Vissers