Several enemy agents escape from a top-security prison, determined to wreak vengeance against the persons responsible for their arrest. When two of Steed's friends are murdered by the escapees, he decides it is time to end the reign of terror once and for all. But the still-imprisoned leader of the enemy minions calmly informs Steed that he is next on the list -- and that his assassin will be completely invisble. Written by Philip Levene, "Get-a-Way" made its American TV debut on April 24, 1969, and its British TV bow on May 14 of that same year. ~ Hal Erickson, Rovi