Part Seven in Jerry Cotton Series. The FBI agent tackles an organisation of assassins who kill to order.

Several employees on a nobleman's estate show up at a former abbey, reputed to be haunted, to search for a hidden treasure. Howver, a mysterious hooded figure begins killing off those who may have figured out where the treasure is hidden.

Before the police station in Ober-Himmelbrunn is dissolved, the local landlord reports a burglary. The young gendarme Thaler is assigned to solve the case. Disguised as a holidaymaker, he goes to work. In the process, he conquers the hearts of twelve attractive girls who want to spend their holidays in an alpine hut.

Father Brown is only too happy to interfere with the work of the police in solving tricky criminal cases, usually with resounding success. That's why the clergyman is transferred to a sleepy island called Abbott's Rock. At first, nothing happens there, but somehow Father Brown seems to be attracted to crime: Soon a gang of thieves is up to no good on the island. So Brown makes the headlines again, and is punitively transferred once more. This time he finds himself in a quiet Irish millionaire community.

Police try to track down a hooded serial killer who murders his victims with a combination of acid and poison gas.

Macho Alex is smart and good-looking. He is known among women as an unscrupulous hunter. He wraps the women in rows around his fingers and then disappears into his sports car. For him, love is something for men who pee while sitting. The womanizer Alex then pushes it a little too far, because three love affairs at the same time are too many even for the greatest professional.

Katharina Giano tries to start a new life after a personal tragedy, but moves into a mysterious apartment building with her daughter Laura.

Scientists try to simulate the Big Bang and the experiment gets out of control. While satellites come down and chaos arises, the stories of several people trying to survive is told.