·The first case·Throat cutting in the secret room of the greenhouse: Qin Haisheng, the owner of the villa, was found dead
The locked glass greenhouse, the doors and windows were locked, and the only key was in his pocket. Deceased
The left hand holds a black mandala flower, which is the serial sign left by the murderer.
Name.
·Second case·Fall in the secret room in the snow: Entrepreneur Zheng fell from the bell tower and now
The field is a complete snow field without any tracks. Next to the deceased, there was also a
black mandala.
·The third case·Heart paralysis in the double secret room: Novelist Bai Mou is in the guest room
He died of internal paralysis, the door was locked, the window was locked from the inside, and there was a cliff outside the window.
The syringe was left at the scene and the fingerprints on it pointed to an unlikely person.
Concept: Suspense, suspense, genius, reasoning