The son of the inventor of a matter-transporter, which turned him into a monster when he tried to transport himself along with a tiny housefly, continues to pursue his father's experiment, while his own two sons attempt to extricate him, themselves and the family name from further disaster and scandal.
Honeymooning in Bavaria, a young couple becomes stranded and is forced to stay the night in the area. Doctor Ravna, owner of the impressive chateau that sits imposingly above the village, invites them to dinner that evening. Their association with Ravna and his charming, beautiful family is to prove disastrous.
In Tiger Bay, the docklands of Cardiff, rough-and-tumble street urchin Gillie witnesses the brutal killing of a young woman at the hands of visiting Polish sailor Korchinsky. Instead of reporting the crime to the authorities, Gillie merely pockets a prize for herself — Korchinsky's shiny black revolver — and flees the scene. When Detective Graham discovers that Gillie has the murder weapon, the fiery young girl weaves a web of lies to throw him off course.