Alec masquerades as a wealthy Australian millionaire to extract a million dollars from ruthless shipping magnate Rodesko but the job is complicated when Alec's affection for Rodesko's fiancée grows.
The rogues get word the President of San Luco has arrived in the US to sell the Stefanini jewels. Miss Harkness explains how the jewels originally belonged to their family and decide to get them back.
Alexander Fleming decides to go after the fortune amassed by General Diaz during his despotic rule of his country. The rest of the clan see real value in stealing his 6 million dollar fortune.
Tony and Timmy learn that officials of a Texas town plan to unscrupulously influence the placement of a space launch site to profit from land they have bought so the two plot to replace the true government officials and collect the bribe.
Marcel encounters Arlene, with whom he had partnered with in the French underground during WWII, and takes a special interest in her son Jamie while pursing a scam on a corrupt foreign official.
In Paris, Margaret, Timmy, and Tony come up against a swindler and his charming cohort who coax money out of unsuspecting, worried parents. They set up an elaborate scheme to try to expose them.
Tony and Margaret scheme to separate a very wealthy Plavonian, known as Mr. Smith, from some of his money, gotten through ruthless, cut-throat tactics. On the way to do so, Tony, posing as a well known international financier, is kidnapped.
In Boston, a friend of Tony's loses his business to a wheeler-dealer named Mannix. Tony schemes to raise the money to buy it back for him by selling Mannix a company he doesn't own.
In Budapest, an old friend engages Marcel and Timmy to smuggle a intelligence computer. When the friend is murdered, corrupt official forces the pair to do his personal smuggling but the two plot to accomplish the original task.
Tony buys an entire lot of 22 ships sold by the US Navy, then offers to sell them to a crooked shipping magnate by convincing the man that on one them, $2 million worth of gold bullion is hidden.
The family concocts a scheme in which Auntie Margaret pretends to be Anastasia so that the Russian government will believe that she knows where the Romanoff fortune is hidden in order to collect a fee for the fortune's surrender.