Christopher Storm aids one of his guests when he gets involved in an innocent card game with a group of gangsters which results in murder. Chris discovers a wallet lost and, quickly returned, establishes the identity of the victim of an international racket.
After years of pursuit, a would-be killer wounds his victim in front of Christopher Storm's "Hotel Frontier". Collapsing in Storm's arms, the exhausted man inadvertently involves Storm in a deadly feud, with death as the easiest way out.
Shortly after his conversation with a sultry beauty, Christopher Storm finds a priceless diamond necklace stuffed into his pocket. Chris is given one hour to prove that he did not actually steal the necklace.
An undercover agent carrying state secrets is found stabbed to death in Christopher Storm's "Hotel Frontier". The key witness, an attractive French girl, refuses to talk. Chris Storm starts off to bring the murderer to justice.
A pleasure trip to Copenhagen turns out to be strictly business for Christopher Storm. He is led into a carefully laid trap, set by a European spy ring, that is designed to acquaint him with a female spy. The ring plan to use Chris as an unwitting courier for top secret defense plans.
Christopher Storm concludes an innocent luncheon date and then learns that his luncheon companion, a respectable Viennese businessman who works for Western Ingelligence on the side, is the unwitting target for two shadowy killers at five o'clock that evening.
Christopher Storm steps out of his role as a Vienna hotel owner to get involved with a juvenile delinquent and his doting sister. The delinquent, a part-time boot black, starts a lot of trouble by stealing a packet of narcotics from a gangster's office in Vienna.
Hotel owner Christopher Storm is the victim of a surprise gun attack by a vindictive youth who blames him for his imprisonment. When Chris finds out who the gunman is, he runs into another problem with the man's sister.
Two lovers, who cannot get married because of financial difficulties, plan to part. Jan, the boy, finds a diamond necklace, dropped by a fleeing thief near Chris Storm's "Hotel Frontier" and feels his luck has changed.
A beautiful girl sneaks out of Christopher Storm's Viennese Hotel without paying her bill. The girl leaves behind a suitcase with $75,000 inside. Chris recognises her as a fashion model and gets involved with a case of blackmail when he tracks her down.
A young secretary-companion steals a pearl necklace from her employer in order to help her brother. When the girl tries to return the jewelry, she can't find the opportunity, so Chris Storm dons the guise of a French waiter to return the necklace.
A cryptographer finally breaks an important code while resting in a quaint Viennese park. When he suffers a heart attack, a small boy picks up the paper he was working on and uses it is make a paper airplane. Chris is sent to find this most valuable toy.
Chris Storm, while taking a couple of days' holiday in Zurich, receives a phone call from a woman, whose voice evokes more memory than mystery for him, asking him for a date. However, when Chris reaches the address she has given him, he is drawn into a police raid on the apartment. It is filled with stolen furs. Penolope, the woman in question, is alone in the flat awaiting the arrival of the police and Chris. She has also phoned the insurance company, a representative of whom arrives at the flat at the same time. The fur thieves have escaped, but Penolope knows who ...
Chris Storm falls in love with an artist, but is unaware of the tragedy of her past. Chris tackles a mystery, the elements of which are: an unsolved Christmas Day murder, a confession of love from a grief-stricken man, a small artists' colony on the outskirts of Vienna, and a quiet funeral parlor. The clue to the young artist's mystery lies in a charm bracelet she wears that has one charm missing.
A diplomat friend of Chris Storm plans to double-cross the government by turning important papers over to a foreign power. He uses the unsuspecting Storm to transport the papers to Stockholm. Chris comes face to face with death while preventing the valuable secrets from falling into the hands of the foreign power.
Christopher Storm gives information about a black market medicine ring to the authorities. Before he can place the ring leader in the hands of the police, he finds himself accused of a vicious murder, the victim of a police hoax and receives a brutal beating.
European winters fail to dampen the spirits of the unstable teenage society of Vienna - and the activities of a ruthless narcotics ring. When a small-time peddler passes some narcotics in Chris Storm's "Hotel Frontier" that results in tragedy, Storm decides to clean up the racket.
An honest but misguided young man seeks revenge for the cold-blooded murder of his younger brother by smugglers. Chris Storm is asked to help find the murderer and discovers he must protect the culprit from the dead man's brother.