Join or Sign In
Sign in to customize your TV listings
By joining TV Guide, you agree to our Terms of Use and acknowledge the data practices in our Privacy Policy.
A Secret Service agent investigates his mentor, who is suspected of plotting to assassinate the president while having an affair with the First Lady.
There are no TV Airings of The Sentinel in the next 14 days.
Add The Sentinel to your Watchlist to find out when it's coming back.
Check if it is available to stream online via "Where to Watch".