A Silent film based upon the Broadway play by Mary Roberts Rinehart and Avery Hopwood.
Directed by Roland West in 1926, later being Remade as the Bat Whispers in 1930 (by Roland West) and again in 1958 in the Bat starring Vincent Price.
The Bat, a masked criminal, terrorises a mansion filled with the guests of a mystery writer; a mansion in which a robber has hidden $20,000 of Stolen money. The House guests along with a detective search for clues to the location of the money and the identity of the Bat.
One of Batmans greatest trademarks is the bat signal. In this film "the Bat" can be seen using the bat signal, using it to frighten his enemies before he attacks. In later Batman comics, films, etc., the police use it to contact Batman, although modern innovation has taken the signal back to its roots in using it to remind and possibly terrify criminals as to the reality of Batmans existence.