Department S

When a real estate agent shows a warehouse to a potential client, they discover a replica of an elegant room, with the painting of a lady on the wall, and a crazed young man locked inside, next to the body of a woman. The British police don't know what to make of it, and the Department takes over.

Stewart and Annabelle visit the young man in the psychiatric hospital he was taken to and try to get anything useful out of him, but the only real clue they get is the name of a woman - 'Selina'. This remains the only clue they'll get from him, since he is murdered soon after the detectives leave.

Meanwhile, Jason tries to find the original of the woman in the painting and locates the artist who painted the picture, but is knocked out and can't prevent the evidence from being burned. Eventually the investigators find the original of the elegant room, but even then the case is far from solved...