Lily's long-lost dad shows up unannounced on Thanksgiving Day. She confides the real reason she stopped speaking to him three years ago, as she and Marshall disagree on how they should deal with the dispute.
The BAU team face one of their toughest cases yet ,when a prolific, border-crossing serial killer leads them on a hunt into Canada.
Bishop and McGee go undercover to investigate the murder of a marine, hours after a phone call made to Gibbs about a case.
Kevin receives support from an unexpected area when he is stressed about the upcoming premiere of his play. Randall feels strained with the combined pressures of work and his sick father.
Bull helps a famous social media influencer take her father to court to overturn his legal guardianship over her empire, which he was granted after the young mogul suffered a public mental breakdown.
