When a passenger jet crashes, the BAU is called to build a profile around the suspicious circumstances, which hits close to home for Kate.
The team is forced to put in overtime while searching for a suspect presumed dead when working on a case over Christmas.
Sean experiences a moral and ethical dilemma when asked to perform surgery on a prison inmate; Kimber questions how far she will go to keep Christian when they receive life-changing news.
The gang gathers for a viewing party when a TV show covers Monk's handling of a serial-killer case; while watching the show, Monk realizes someone else killed the third victim.