Le triangle de feu (1932)

A secret organization ,"Le Triangle De Feu" (the fire triangle) ,signs all their crimes with a triangular hole .Banks,gold trains are robbed and the Police are helpless.Nobody knows who is at the head of the Triangle De Feu" -although you do not have to be Holmes or Poirot to guess - In the heroine's good uncle's desirable dwelling ,visitors are requested no to smoke because it disturbs the fishes in the aquarium ,some of them are very rare ..