Synopsis:
Sark is nearly tortured at Sloane's hands for his apparent betrayal but Sark suggests it is someone else in SD-6. Sark is teamed with Sydney to retrieve a high-tech spy computer called Echelon from Cuvee which is Syd erases, as per the CIA counter mission. Will is hired back by the CIA provided he takes a psych evaluation first. The Alliance brings in Ariana Kane to investigate Emily's dissapearance and to look for a mole in SD-6, focusing her investigation on Jack. Syd and Marshall, in his first field assigment, go to London to erase a back up of the Echelon Device. Marshall is to be captured by the CIA for the counter mission but someone else gets to him first.