Terry persuades Mary, Barton's secretary, to arrange for Steele to X-ray the painting, which he confirms is a copy. However, as Terry, Mary, and he are leaving, he is knocked out and Mary pulls a gun on Terry. Terry and the punchy Steele are taken to the estate of Dr. Lowell, who is behind the thefts and forgeries. He explains to Terry that as a frustrated art lover, he could never have acquired such fabulous works legitimately. Before killing them as the only witnesses to his scheme, Lowell uses narcosynthesis on Steele to assure himself that Steele did not tell the police, the technique he also used to make Steele believe he was in a train wreck. Lowell waits for a passing scheduled train to mask the sound of gunshots, but Traybin and Cochrane intervene, shooting Lowell just before he can kill Steele. Traybin had been waiting outside the entire time, waiting to determine where the stolen art is concealed. To save herself from being charged as an accessory to Stevenson's murder, Mary shows them the location.