sentences:  The introduction of the WSB spy agent Robert Scorpio (and later fellow agents Sean Donely (John Reilly) and Anna Devane (Finola Hughes)) led to several popular spy mysteries involving secret formulas, hidden treasures and world domination schemes.A few of these plots were considered preposterous, such as the 1981 storyline in which Luke, Laura and Robert saved the town of Port Charles from being placed under a deep freeze by maniacal Mikkos Cassadine's Ice Princess weather machine.