Sleeper agent Jenny "Anya" Franklin is brought out of retirement in Barcelona to help the CIA investigate three assassinations which have the MO of Jenny's alter ego, "The Whisper".

Jenny is in Madrid with her teenage daughter, Becca, when stealth attackers hit the city, exposing Jenny's secret past as a Russian spy.

Jenny finds an anguished killer and ends up in a fight for her life; Becca lashes back; the merciless force behind the attack emerges.

Jenny sets a trap; Europol connects with Chauncey; Felipe's boss lies within reach, but an agent loses control.

After learning more from Europol, Jenny confronts a handler with a personal tale; as suspicion grows, Becca attracts danger; an old cohort reappears.

Trust gets tougher to find as members reconcile; Camo digs; Damian springs a trap; the real Gideon emerges; Jenny tries to get a grip on her guise.

Forced into the unthinkable in the past, Jenny goes to great lengths to remove invasive technology and find Becca; Felipe enlists an assasin.

Painful, physical memories surface as Jenny and Chauncey race to find the culprit behind the mayhem, recover a lost child and get to the real target.