The shops of the architect Heller

The case takes Maria and Karl into the recent past, when at Myštěves Castle, which now serves as the golf hotel for the club of the same name, the priests were imprisoned in the 1950s, priests, monks and other clerics. They died here in inhuman conditions behind the barred windows of the cold cellars. People from the surrounding villages still tell legends about the secret graves in the castle woods. The architect Heller accidentally stumbles upon clues that should lead to the discovery of the treasure. But the discovery is fatal.