 In the series  first two-hour episode, Mac is called back to his previous career in CIA intelligence when an agent is found fatally poisoned in a hotel room. Before dying, the agent had grabbed the Venetian blinds over his window and twisted them. Mac and the intelligence community realize the dead man was identifying his killer as "Venice," a notorious rogue agent who sells secrets anywhere and murders anyone who might recognize him. Mac and other agents seek out a woman named Elena Standish, an undercover operative who is the only person to survive a Venice attack. Venice goes after Elena several times, killing a contact and wounding Elena. Mac suspects that Venice is someone very close to him in the intelligence community.