The NCIS team and the Coast Guard Investigative Service work together when a Navy Admiral's daughter is the prime suspect in a double murder on a research boat Lasalle looks for his estranged brother.
Government agents demand that Brennan and her team determine a cause of death for an unidentified and highly classified set of remains Cam thinks Michelle is keeping a secret from her.
Brennan and Booth travel to Mexico to investigate human remains with extraterrestrial attributes Angela and intern Wendell come clean about their relationship.
Brennan's father (Ryan O'Neal) invites a distant relative, Margaret Whitesell (Zooey Deschanel), to spend Christmas with him and his daughter Brennan and Booth investigate when a man dressed as Santa Claus is blown up after a botched bank robbery.
The remains of a competitive gamer are found in a grease truck Sweets, Hodgins and Jeffersonian intern Colin camp out for tickets to a movie premiere.
Booth's grandfather comes to live with him and tags along as Brennan and Booth investigate human remains that were found by a real estate agent who was showing a property to prospective buyers.
Booth must be recertified for FBI marksmanship, but he is not the accurate shot he was before having brain surgery Brennan and Booth investigate the death of a little person who was a wrestler.
The Jeffersonian team investigates when the mutilated remains of a chicken farmer are found near a river the case prompts Angela to launch an animal-rights campaign.
When a body is discovered at a popular nightclub, everyone is a suspect.
Brennan asks Booth to be the father of her child Stewie Griffin (Seth MacFarlane) offers the couple advice.
While on a mission to hunt down a Codex lead, Mac and the team discover Murdoc hacked their comms and has recorded them for months.
When Mac and the team are unable to prevent sensitive intel from falling into Codex's hands, Mac must scale a vertical cliff using only gear he can cobble together himself to prevent the info's transmission.
Mac and team rush to help when Matty's former mentor, Ian Cain, and his embassy staff come down with a deadly, mysterious illness Taylor and Bozer work with Jerry Ortega to infiltrate a Codex cell.
A secret experimental cancer treatment Mac's developing with a friend is discovered when culprits ransack their lab, kidnap Mac's partner and plan to use the research to create a powerful new nerve agent.
During COVID-19's first stay-at-home order, Mac, Bozer and Riley must stop a crime in progress at their neighbor's house Russ' romantic fling takes on a longer and more complicated turn when they quarantine together.
When an anger-driven, unknown subject targets successful businessmen in Detroit, the BAU must investigate.
The BAU investigates three similar crimes in which victims' remains are discovered in old suitcases.
Agent Matt Simmons joins the BAU team in a race to take down Mr. Scratch and save one of their own in the process.
Morgan brings the BAU new information in the case against Mr. Scratch, a serial killer and escaped convict who has been wreaking havoc on the team.
When Reid fears his mother has been abducted, he asks the BAU to investigate while he's stuck in prison.