John Timothy Botka

Jack is distraught and defensive when Chet Collins (recurring guest star Charles S. Dutton), whose son has been missing for 6 years, decides to search for him on his own because he thinks Jack has given up hope of finding him. Feeling guilty over his failure to recover Collins' son, who was 2 years old when he disappeared, Jack kept the case active despite fearing the worst. However, after Collins comes in with another clue, Malone becomes angry and tells him that the case will never be solved. The team gets involved when Malone fears that Collins will do something desperate to finally get his child back.

In the season finale, on Jack's last case before he moves to Chicago, the team searches for a billionaire's estranged wife and their two children after the yacht they were last seen boarding is soon found adrift in New York Harbor--with only its dead captain aboard. Jack becomes suspicious of the steely and sarcastic billionaire Ben Palmer (Jon Tenney), but additional suspects begin to surface as well. Palmer receives a cryptic ransom call from a man demanding to receive what belongs to him in exchange for returning Palmer's family alive. The team and Palmer have only eight hours to figure out what the kidnapper wants. Meanwhile, Jack and his team prepare for Jack's move to Chicago, and Vivian waits to hear if she'll be promoted to replace him.