While on the trail of a scientist who has stolen a vial of deadly germs, the agents are pulled into a night of deadly parlor games. West and Gordon must recover the vial before it bursts and releases a veritable plague while managing to live though the games of their host.

The plans of The Raven seem to be successful as they have hypnotized Jim West and had him assassinate the Mexican Ambassador. Unfortunately for the group,Frank Harper had been impersonating the ambassador to test whether Jim had been conditioned. West and Harper work together to infiltrate and undermine the group and capture everyone except for the huge-headed Tycho.