Carlos Varela takes responsibility for a jazz group, The Arthur Rogers Jaz Quintet, that his company has been transporting around Europe on tour when Major Harold Nelson of MI.5 informs him that the group are sending information to spies and he wants to know how.
A Korean wartime colleague of Varela sends him a prearranged distress signal from Lisbon that spell danger. The friend is murdered and Varela goes to Lisbon and finds he is the beneficiary of a supposed key to a safe deposit box containing secret research papers into the perfecting of a new LASER beam, but there is no key and interested parties are prepared to kill to obtain the papers.
In Poland, Carlos is harassed by the authorities at every turn. At his hotel, a beautiful girl seeks his help in order to escape to Austria, but is she really a communist agent?
A young woman who's parents were cheated by gamblers on a luxury cruise Carlos arranged,persuades him to take the next trip to try and expose the card sharks.
Carlos investigates where an Irish Monastery has apparently been sold and needs moving to Texas in the USA.
Henry, the son of one of Verela's clients, is a boy genius and when he buys an obscure book that has stolen top secret flight plans concealed within the thieves want the book and follow Henry on his way to Switzerland escorted by Miss Carter and Bill Randall who is employed by the boys' father.
Carlos investigates the death of an old friend on a small Greek island, where he discovers a deported American gangster has taken over.
Varela is abroad when Miss Carter is left with the problem of 30,000 unwanted horse blankets. Bill Randall visiting her for a dinner date takes over and with the help of a top model enters the cutthroat world of fashion and the forthcoming wedding of a royal princess.
An American has been selling sunny Caribbean housing lots that turn out to be under muddy water, leaving angry buyers and Carlos with prefab houses that can't be built. He works out a plan to convince the greedy land dealer that the lots are worth buying back.
Valera is in New York when a young girl goes missing from an exclusive ladies' finishing school where he is a school governor. Bill Randall staying at Valera's London office steps in to investigate at the headmistress's request.
Varela is intrigued when two professors approach him to obtain photographs of a relic contained within a priceless casket, which could prove more important than the Dead Sea scrolls. It means entering a small sheikdom with the help of the sheik's son with expensive tastes.
Bill Randal, an employee of Carlos' firm, is taken in by a lovely heiress who convinces him to insure an antique collection being smuggled out of her country, which recently went socialist. When the lot is sunk at sea, Randal's on the hook.
An £11 million gift, dollars for Europe, for the poor of Palabria is refused unless the five man committee each receive an expected bribe but a government inspector is investigating corruption. Varela is on a cruise so Bill Randall and Chin go to Palabria to pay the bribes under the inspector's nose.
