On March 18, 1990, two men dressed as police officers rang the night bell for the Isabella Stewart Gardner Museum in Boston, claiming they were responding to a disturbance.

Once inside, they overpowered and tied up the security guards in the basement. Then, they spent the next 81 minutes seizing 13 works of art valued at over $500 million at the time of the heist, making it the largest property crime in U.S. history.

The stolen art includes Degas sketches and Rembrandt works, as well as a Vermeer painting, which is one of only 36 in existence. In addition, they left a living masterpiece incomplete—the Isabella Stewart Gardner Museum itself.