A new East Frisian crime novel by BILD bestselling author Dirk Trost. The 4th case for Jan de Fries. The moment the signal rocket explodes with a sharp bang and the fog bank is bathed in red light, former lawyer Jan de Fries knows that something is very wrong. Two clam boats moored together are drifting on the sea like ghost ships. When Jan goes on board with his friends Uz and Onno, a scene of horror awaits him in the cabin: the two crews of the fishing boats had probably met for a birthday party at sea, and now they are all dead. But who fired the missile just a few minutes earlier? It is immediately clear that the sailors did not die of natural causes, and Jan is in the middle of a new investigation. The next day, Jan and his dog Motte are victims of a targeted attack during their morning run along the dike.