Charlie is being framed as a serial arsonist, fires that have resulted in five deaths so far. Their search settles on Peter Eisenbeis as the arsonist, a recently released convict that Charlie was responsible for convicting. Also, Charlie was part of the chase that caused massive brain injury to the man's infant son. Marla, the child's mother, has cared for the hopelessly bedridden boy for thirteen years with love and devotion. Only she can lead Charlie and Constance to Peter before another fire is ignited or before Charlie is arrested, whichever comes first.