Jacques van Hoven

Van Duylen, representative of a diamond syndicate, brings to Amsterdam the Koh-I-Noor II , the largest diamond ever found. In one of the city's oldest diamond-cutting establishments it is cleft and the nine small stones are polished. Escorted by detectives, Van Duylen takes the stones home and puts them in his burglar-proof safe. He tells his wife that its doors are electrically charged and that anyone opening them in the wrong way will immediately be electrocuted. Two suspicious persons, Jack the Acrobat and the lion-tamer Feenstra, prowl around Van Duylen's villa, inspecting the doors and windows.

Het wrak in de Noordzee ('The North Sea Wreck') is a fisherman's drama about the romance between the daughter of a Scheveningen captain and a young fisherman. Their love is threatened when another fisherman sinks the boat of his rival, and blackmails the girl's father to give away her hand in marriage. Eventually the missing fisherman pops up again, and marries his beloved. His criminal rival is punished.