Riker takes command of the wounded Titan, a Changeling saboteur is found aboard, and Raffi and Worf learn of a Changeling conspiracy.
The Shrike attacks, wounding Shaw, who hands command to Riker. Beverly explains that she hid Jack from Picard to protect him from Picard's enemies. Riker wants to escape, while Picard urges a trap. Jack and Seven discover an ensign leaking a trail for Vadic, who is revealed to be a Changeling.
Raffi and Worf capture a suspect in the M'talas Prime attack and find he too is a Changeling, part of a rogue faction left over from the Dominion War. When the Titan finally fires on the Shrike, Vadic's portal turns its weapons back on it, leaving the ship crippled and drifting toward a gravity well. Riker orders Picard off the bridge. Jonathan Frakes directed.