The Inverosimil Quellssin

In the city of Quellssin, near Japan, a series of mysteries, illnesses and disappearances terrorize the population. The police, led by detectives Lowondo and Flambé, investigate these mysterious events and discover Mozlayo, a yellow ape, as a suspect, but new victims and strange illnesses raise doubts about his guilt. Dr. Tratzy and Lowondo carry out risky experiments to clarify the mysteries. Illnesses, military conspiracies, romance and revelations lead to a surprising outcome.