Amanda is finally given Agency training while Lee acts as a Ringer- pretending to be a trainee in order to spy on the other recruits- and a Soviet spy is assigned to take out the hidden Agent- only they think it's Amanda.
Lee starts to show the signs of burn out and begins meeting a man who has been linked to the disappearances and presumed deaths of three other burnt out agents.
One of the components of a dangerous form of nerve gas is stolen and Lee goes undercover in Amanda's neighbourhood to watch over a scientist as Amanda gets involved in anti-pollution.