When you watch NCIS Season 15 Episode 24 online, the season finale begins with Vance learning about a violent altercation at a restaurant, where one of his agents attacked a man who then ran away. Shockingly, the agent is revealed to be Jack Sloane. Flashing back to earlier in the day, the circumstances of the incident are slowly revealed. As most of Team Gibbs responds to investigate a bomb threat on a Navy ship, Gibbs visits the graveside of his wife and daughter and Sloane prepares for a date with a friend introduced to her by McGee and Delilah. It's at this date that she encounters, by chance, the man she believes is responsible for the torture and deaths of her team some years prior in the Middle East. However, the only evidence she has to support her claim is her identification of his voice. She never even saw his face. Despite all this, Sloane remains conviced that Nigel Hakim is the Monster who tortured her and the others. The revelation gnaws at her, causing a downward spiral and concerning both Vance and Gibbs. Will they discover the truth about whether Nigel Hakim really is the Monster or not? Is Sloane correct about his identity? Find out what happens when you watch NCIS Season 15 Episode 24 online!