Five years earlier the British Secret Service ordered Mark Charter to assassinate Sharp, a renegade British agent who defected to the enemy state of Abarain. But now the two countries are at peace and it is Sharp who has come to broker an important arms deal in Britain on behalf of his government. Charter, supposedly dead but actually in jail, is now free and is coming after Sharp, giving Steed the unusual task of protecting an erstwhile traitor.
—don @ minifie-1