Black wolf / Kathleen Kent.

"It is 1990 when Melvina Donleavy arrives in Soviet Belarus on her first undercover mission with the CIA, alongside three fellow agents--none of whom know she is playing two roles. To the prying eyes of the KGB, she is merely a secretary; to her CIA minders, she is the only one who can stop the flow of nuclear weapons from the crumbling Soviet Union into the Middle East. For Mel has a secret; she is a 'super recognizer,' someone who never forgets a face. But no training could prepare her for the reality of life undercover, and for the streets of Minsk, where women have been disappearing. Soviet law enforcement is firm: murder is a capitalist disease. But could a serial killer be at work? Especially if he knew no one was watching? As Mel searches for answers, she catches the eye of an entirely different kind of threat: the elusive and petrifying 'Black Wolf,' head of the KGB"--