The Mystery of the Empty Room (1915)

Ruth and her father stay at an inn run by the malicious Scroogles. The Scroogles rob Ruth's father, throw his seemingly dead body over a cliff, and deny he was ever there when Ruth asks. Ruth seeks help from artist Richard Foster. Together, they find evidence, confront the Scroogles, leading to a struggle where Mr. Scroogles accidentally kills his wife before being shot and dying himself. Ruth and Foster (now engaged) find her father alive but dazed; he recovers, and adopts a mistreated girl from the inn. The traumatic "empty room" incident leaves a lasting impression on Ruth.

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