When a crazed gunman terrorizes his neighborhood, officers put themselves in the line of fire to restore order; a man discovers his elderly father has been stabbed in the back, and the knife itself turns out to be Lt. Joe Kenda's biggest clue.
Nicole Curtis ventures down into the creepy basement of her 14-Mile project. She's then faced with a dilemma when an unforeseen turn of events threatens the entire project.
Frankie's mom stays with her after becoming ill; Sue suggests to Sean that they should set each other up on dates; Axl and Brick ponder what Mike actually does at the quarry.
A convicted felon claims NCIS framed him for murder a decade ago, so Gibbs investigates and asks Ducky to conduct a new autopsy. Meanwhile, Senior FBI agent Fornell joins the probe, since he was the lead investigator in the original joint FBI and NCIS case.
An undercover operation brings out Holt's inner gambler. Rosa tries to out-laze Hitchcock and Scully. Charles buys a food truck with an unsavory past.
Diane experiences a big life event toward becoming a woman and Bow, Ruby, Zoey and Alicia are there to support her. Meanwhile, afraid that he may never be able to beat Junior at basketball again, Dre conducts psychological warfare on Junior before challenging him to a game.
A clinical trial of brain implants in veterans is hacked, and Patton must work alongside his ex-wife who spearheads the project.
Having received an ominous threat from her old boss, Amunet, Caitlin fears that her past time as Killer Frost may be back to haunt her. Felicity comes to Central City to help the girls celebrate Iris's bachelorette party, while Cisco, Joe and the guys take Barry out for a night on the town.
Kai receives visits from Charles Manson as he begins to question everyone around him.
Bull helps a teachers union represent a woman who is being prosecuted for helping an impoverished student pass an important test, but who may be the scapegoat for a larger cheating scandal.
When Nate thinks he has found a pattern to the anachronisms, it leads the Legends to London in 1897 to hunt down a time-traveling vampire. When they arrive in London, they run into Rip, but not everyone welcomes him back so quickly, leaving Sara to make a tough choice in the end. Amaya tries to connect with Zari, but she is still struggling with being part of the team. Meanwhile, Stein discovers what Ray and Jax are up to and is not entirely pleased.
Section 20 start to close in on terrorist Omair Idrisi and his wife Jane Lowry, but the team is forced to extract devious arms dealer Morgan Ives from Libya.
When a farmer's strike led by a local preacher escalates, a man from his past is sent to restore order.
Murtaugh and Riggs investigate a death that occurs moments before the victim's bet wins a horse race. Leo Getz insists it's a homicide and aids in the investigation. Murtaugh updates his will. Riggs struggles to come to terms with his past.
An accident puts Nico in jeopardy; Kate tries to entertain land-locked guests; Brianna grows weary of Jen; Matt is back in hot water with another restaurant owner; Bruno tries to show Kate up with his knowledge of guest relations.
Jamie's 13-year-old son gets a lesson in wreck recovery after a semi crashes down a 150-foot embankment; rock slides north of Hope trigger road closures and an explosive clean-up; Dylan puts on his hip waders to fish a truck out of a lake.
While the search for the missing boys continues, the squad faces off with an untrustworthy priest, an angry ex-husband and threats from the FBI; Rusty startles Flynn and Sharon with a surprising request.
When Appa discovers Umma's secret side-business, he wants in. Janet accidentally-on-purpose assumes a new identity. Jung and Kimchee go through the emotional highs and lows of acquiring a new freezer.
A powerful update on Leah’s childhood friend Chantal Dodson. Leah and Mike sit down with Chantal and her mother, Ramina, who reveals that after 42 years in the Church, she’s made the remarkable decision to leave Scientology. Also, season one contributors are back and share how their lives have been impacted by appearing on the show.