Two unsigned personal invitations will bring the titled Englishman, Lord Brett Sinclair and the self-made oil tycoon, the American Danny Wilde to Monaco for an encounter with a stunning brunette and the Mediterranean crime syndicate.
Brett and Danny find themselves engaged in a cat-and-mouse game of deceit and murder as a long-missing heir returns from the grave claiming a several-million-pound fortune. Is he a sibling or an impostor?
Someone has gone to great trouble creating Lord Brett's flawless copy, who masquerades as his indistinguishable impersonator while in his absence. What is worth that endeavour and could Danny tell the difference between them?
Once again, Danny's life is in grave danger as a newspaper photograph showing him carrying a case with a statuette of a German eagle will attract the attention of an ex-Nazi fanatical Count and his assassins.
Danny's in for a trip down memory lane when he bumps into a long-lost childhood buddy from the Bronx slums, but shortly, as bullets start flying all over the sun-kissed French Riviera, the masks will fall off.
Things turn volatile when unexpectedly, Danny gets himself handcuffed to a much-wanted attaché case, sparking a relentless manhunt from both MI6 and Iron Curtain agents who need to recover the case at all costs.
It's high time the masks fell off and a crooked colossal entrepreneur finally got what he deserved. This is definitely a job suited to Lord Brett Sinclair, or better yet, a job suited to Danny impersonating Brett.
Brett and Danny accidentally discover a plane wreckage, and with it, a low-cost, high-grade synthetic fuel formula, which attracts a parade of oil tycoons and "considerate" daughters, all claiming the formula.
A concealed microfilm in a dark grey attaché case dropped inconspicuously in Danny's luggage trolley, will trigger a game of masquerade as unlucky Danny will need to play along and act as an undisputed American criminal mastermind.
On the run from the U.S. authorities and the Mob, an American gangster in Rome offers information expecting a reduced sentence, however, smuggling him out of the country will be no easy task for the Persuaders.
A blind double-date for Danny and Brett will eventually implicate the former in an outrageous case of abduction, when the spoiled offspring of a business tycoon will be kidnapped in broad daylight despite the valiant efforts to prevent it.
Sadly, as a methodical assassin has been killing off the noble and honourable members of the Sinclair Clan one by one, Brett who is next in line, must find a way to flush him out, of course with the aid of Danny and a stunning Sinclair.
Two members of the once-proud Russian Aristocracy are in desperate need of Lord Brett and Daniel's assistance to establish their right to a jewellery collection of immense value, however, not without exciting discoveries on the way.
The Persuaders vie for the attention of a gorgeous soap heiress who has fallen for the slippery charms of a deceiving con man, but in the end, who can really say that the pot of gold at the end of the rainbow isn't an illusion after all?
As it appears, someone is going to great lengths to remind Brett and Danny the perils of the exciting world of motor racing, while in the meantime, the stinging innuendos of a grudge behind all this, will become a certainty.