The Walker family is devastated to find that Tommy may not accept their help; Justin makes plans for the future; Saul makes a shocking admission about Ryan Lafferty's mother.
A serial killer evades capture in Miami and goes to New York with a hostage, so Mac teams with Florida officers to recapture the perpetrator and save his captive.
The team goes head-to-head with a defense attorney (Sean Combs) who might be involved in a murder cover-up.
When an 18-year-old and her father go missing, the team wonders whether his job cleaning up after crime scenes is a factor in their disappearance.