Part 5/10:
The plot thickens when the FBI discovers a disk left by Pollux, revealing the schematics of the biological weapon Castor had hidden. Realizing he needs Castor alive to extract further information, the team visits the Walsh Institute. In a shocking twist, they learn that Castor is alive but in a coma, prompting an audacious plan: a face swap. Archer grapples with the ethical and emotional implications of becoming his enemy, yet with time running out, he agrees to undergo the risky procedure.