While the homeowners were away last month, 60-year-old Stephen Brumme of Silver Spring entered their house, ostensibly to show it to potential buyers.
When the victims returned home, they realized some clothing — specifically women's clothing — had gone missing, and checked the camera footage for answers.
According to the homeowners, the camera was installed inside the bedroom in plain sight after another Realtor had apparently dropped a razor blade in the family's garbage disposal.
They were also hoping to use it to record the reactions of visitors during the open house.
He was later released on bail, but police now suspect other homeowners may have fallen victim to Brumme's scam and are asking previous clients who have lost possessions to come forward.
Brumme's real estate license has since been suspended.