Complete story — includes the ending
Sydney, Vaughn and Jack must determine whether CIA Agent James L. Lennox is who he says he is after his deep cover mission is compromised in Berlin. It is discovered that an agency has built a machine capable of replicating a human being's appearance. In this case, there are two agents Lennox at large and Sydney must discover which one is the real one and which one is fake. It is hinted that the machine has been used before to replicate someone else this way.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Alias season 2. HTML formatting and reference markers removed. · Content license