Mueller's murders

On a warm August evening, the man who calls himself a miller drives to the Totenmaar, a small, deep dark lake in the province, with a recently kidnapped victim. The extinct Eifel volcanoes around the Maar emit carbon dioxide, a heavy gas that collects in depressions when there is no wind and sometimes poisons the cattle ... When the body of Dr. Steenbergen, the environmental manager of a large power company, is found, carbon dioxide poisoning is proven to be the cause of death. The investigating authorities are satisfied with the romantic natural gas theory of the volcano experts. But Steenbergen's friend Peter Welsch cannot accept this explanation. He hires a detective: Richard Romanoff, a sort of scientific treasure hunter. Now, he is to uncover the truth... A charmingly uncompromising, highly topical thriller from the creator of the celebrated Bettina-.