When Paul falls hopelessly in love with novelist Nicole Longet (Claudine Longet), he flees, but she interprets his action to mean that he is a spy colleague of Mike Allen (Stephen McNally) until the agent reveals Paul's secret.

Paul's college friend Mark Shepard (Bobby Darin) gets him to help out in his tourist business on the Riviera, and they become involved with smugglers when they earn a sports car for assisting May Huston (Eve Arden) and her daughter Marcia (Davey Davison).

Paul's old friend Clara Mallory (Jan Sterling), whose hands are disabled, becomes interested in the treatment of Belle Frazer (Kathryn Hays) by Dr. Raphael (Murray Hamilton) a supposed quack.

When Paul makes a satirical toast behind the Iron Curtain, racing-car driver Janos Takacs (Eric Braeden) courteously joins in and finds himself in prison. Paul tries to make up for his frivolous action by freeing him with the help of his sister Marika Takacs (Gia Scala) and former prisoner Istvan Zabor (Telly Savalas).

When April Martin (Carol Lynley) vanishes shortly after Paul meets her in New Orleans, he goes on a complex search that leads him to a surprising solution to the mystery of her disappearance and a threat to her life.

In Mexico, Paul vies with charmer and con man Ramon de Vega (Fernando Lamas) for the affections of the wealthy Jessica Braden (Tippi Hedren).

An old friend of Paul's is on the run, suspected of murdering his lover's husband, and Paul returns to his home town to investigate the case.

Stranded in the middle of nowhere, Paul hops a freight and becomes companion of the enigmatic Brett (Robert Drivas) on a trek full of symbolism.

In Monte Carlo Paul has to come to the rescue of gigolo Ramon de Vega (Fernando Lamas) when “sparrow” Charlotte Hyde (Gena Rowlands) doesn't turn out as he bargained.

When Paul makes a satirical toast behind the Iron Curtain, racing-car driver Janos Takacs (Eric Braeden) courteously joins in and finds himself in prison. Paul tries to make up for his frivolous action by freeing him with the help of his sister Marika Takacs (Gia Scala) and former prisoner Istvan Zabor (Telly Savalas).

Paul successfully defends Louise Brode (Dana Wynter) on a charge of murdering her husband when her regular lawyer, Martin Shawe (Keith Andes), is injured, but Paul suspects Shawe's tactics, and feels compromised.

Paul is in Rio de Janeiro trying to trick Larry Carter (Peter Lawford) into returning to the US to face trial when Molly Pierce (Anne Helm), daughter of his victim, makes an attempt on the murderer's life.

After a brief romance with Laura Beaumont (Katherine Ross, Paul is guest of her father Phil (Stephen McNally) at an exclusive ski resort where an avalanche provides the setting for a cunning card game to defeat the evil dictator General Carlos Portaz (Robert Loggia), the new object of Laura's affection.

Judy Collins (Jill Haworth) transports money for mobsters, but when she calls on Paul's assistance after $200,000 disappears, casino owner Angie Zeno (Harold J. Stone) goes after him, causing Paul to try a daring ploy.

On their sail-planing vacation Paul remains in the dark about the actions of secret Israeli agent Lisa Sorrow (Ina Balin) as she tracks down a Nazi war criminal In the Arizona desert .

Paul joins Mark Foster (Leslie Nielsen) on safari in Africa to help his daughter Julie (Lesley-Ann Warren), a patient of his own doctor, come to terms with her terminal diagnosis.

Paul has been kidnapped by brothers Enzo (Harry Guardino) and Tonio (Sal Mineo), and everyone's life starts to unravel when Enzo's fiancée Marta (Marianna Hill) goes into a Sicilian city to check for arrival of the ransom money.

In Sicily brothers Enzo (Harry Guardino) and Tonio (Sal Mineo) kidnap Paul in order to finance Enzo's marriage to Marta (Marianna Hill).

When he meets American agent Mike Allen (Macdonald Carey) in Spain, Paul is asked to help determine whether a girl he knew in Berlin, Erica Voss (Janine Gray), is an enemy agent. When their private plane crashes in the desert, the truth about her is revealed.

Paul's shark fishing expedition with Hardie Rankin (Howard Keel) and his wife Elizabeth (Dolores Dorn-Helt) is suddenly turned into a test of courage when they meet a party of young people diving for treasure in the South Pacific.

Paul becomes involved with the mob when he meets Elizabeth (Louise Sorel) on a train, a woman in nun's garb, who suddenly disappears.

When Paul spots his childhood sweetheart on the street in Berlin, she seeks his support, but US agents appeal to Paul.s patriotism to find out her secret.

Opera singer Gina Milan (Susan Strasberg) declares there can be no romantic commitment in her life, but allows for one moment of love with Paul.

At a lake resort Paul's life is threatened when he is taken prisoner along with a mother and daughter by an outlaw bike gang responsible for a killing.

If tried in the town where the victim's father is the leading employer, Paul seems certain to face a long prison sentence after the young man is found dead following a small altercation with him.