When a burglar dressed as Santa Claus steals a family's Christmas presents, amateur detective Octavius sets out to recover the loot.
A printer and his young assistant take over a local newspaper while the editor is away.
The forerunner of all serials, What Happened to Mary was a series of twelve monthly one reel episodes, each a complete entity in itself, revolving its immediate dramatic and melodramatic problems within the framework of a single episode and designed more for story and suspense situations than action.
