Varela finds himself involved with the mysterious disappearance of top-secret flight plans from a Space Development Centre. At a millionaire's request, he embarks on an intriguing escapade to recover the plans.

Varela investigates the death of an old friend on a small Greek island, where he discovers a deported American gangster has taken over.

Varela is intrigued when Professor Fletcher requests his help in obtaining photographs of a relic which could prove more important than the Dead Sea Scrolls.

Randall 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, Randall's on the hook.

Why won't the Palabria people receive an £11 million gift to their country? Randall is sent to investigate – and finds himself playing the role of an African witch-doctor to encourage them to do so.

Varela moves in fashion circles and discovers that anything can be sold as the latest vogue – provided you sell your product with panache and style. Yes, anything — including horse blankets.

Varela investigates where an Irish monastery has apparently been sold and needs moving to Texas.

When a young girl goes missing from an exclusive finishing school, everyone suspects she's been kidnapped. However, Varela thinks otherwise and, at the headmistress's request, he sends Bill Randall to investigate.

When Varela undertakes responsibility for a jazz group debuting in England, he soon finds himself with more than he bargained for. It isn't long before the band are serenading a group of spies to save the life of a musician.

Finding himself in trouble in Greece, Jarrell, a wartime colleague of Varela's, sends his ex-comrade a prearranged distress signal: a campaign ribbon and a torn half of a document — the two items that spell 'danger'.

An American has been selling sunny Caribbean housing lots that turn out to be under muddy water, leaving angry buyers and Varela 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.

A young woman, whose parents were cheated by gamblers on a luxury cruise Varela arranged, persuades him to take the next trip to expose the card sharks.

In Poland, Varela 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?