Three young girls have been abducted from their homes.
The body of one has been found in a shallow grave. The other two are still missing.
The murder has shocked everyone in the peaceful city of Delft and the mayor is desperate to catch the perpetrator before panic can spread any further.
With the bitterly cold January weather intensifying it is doubtful that the other two girls are still alive.
But whoever took them is still at large.
The mayor requests the help of Master Mercurius, a gifted cleric from a nearby university, and local artist Vermeer, who uses his skills to sketch the crime scenes.
Can they find the missing girls before it’s too late? Will Mercurius be able to track down the killer?