Monday

Dorothea Puente spent much of the 1980Õs providing shelter for the elderly and infirm in her Sacramento boardinghouse. It wasnÕt until the first body was found in her backyard that authorities realized Dorothea was not the sweet old woman she first appeared to be.

A series of California fires puts investigators on the hunt for a serial arsonist. After years of dogged investigation, an unpopular theory points to a disturbing culprit.