Although the trial of young Theodore Balfour (Tyler MacDuff), who was accused of killing his father Lawrence (Bruce Bennett), had ended in a hung jury, Theodore's lawyer had advised him to plead to the lesser charge of involuntary manslaughter. Outraged that Theodore seems to have been railroaded into prison, his grandfather Addison (Richard Hale) asks Perry Mason (Raymond Burr) to reopen the case, clear the boy, and expose the real killer. This episode is based on a 1957 novel by Perry Mason creator Erle Stanley Gardner. ~ Hal Erickson, Rovi