Victoria Coren Mitchell hosts the series where knowledge willonly take you so far. It's the 400th episode and the seriesfinale, with two teams battling it out to be named champions.
Murder Nova pivots his strategy after a rough start to theseason. But then a member of the 405 suffers a horrific crashthat makes everyone rethink their choices.
When NCIS investigates the mysterious death of a Navyengineer, Joseph Chan, they learn the last person he met withwas his colleague, Maggie Shaw, Jane's mentor and friend,who's been kidnapped. Also, David Sola, a New Zealandintelligence service case officer arrives in Hawai'i,following a lead in his case that connects Joseph's death to aChinese black op secret agent.
Sister Hilda and Dr Turner support a young father with a lungcondition whose wife is planning a home birth, and discover heis also coping with the repercussions of a past trauma. Cyrillooks for a job that will put his qualifications to good use,a first-time mother struggles to bond with her daughter, andFred comes up with a way to keep the wards cool during a summerheatwave.
With the crew in shambles and the threat of the DEA looming,Desna plots an exit strategy for herself and her girls. Herplans are accelerated after Bryce kills Tony in a jealous rageand then confesses it to Uncle Daddy.
Tariq's fate lies in the hands of Tate. Monet's choices feelout of her control. She must rely on Mecca to help salvage thepieces of her family. Mecca plays his hand to put Monet rightwhere he wants her.
Officers John Nolan and Lucy Chen must fulfill three quests ifthey want to get a stolen police helicopter back safely from ateenage thief. Meanwhile, Officer Nyla Harper and AaronThorson must guard a convicted cop killer in the hospitalfollowing a prison riot.
Prince instructs the trading floor on a new play but is metwith skepticism. Taylor and Wendy try to nail down Prince'sintentions, while Wags struggles to hide a conflict ofinterest. Meanwhile, Chuck decides to go after the entirebillionaire class, first tackling the plight of the New YorkCity doormen.
Sam and Joel embark on a covert mission to uncover the sourceof her brother-in-law Rick's sudden windfall. Then, choirpractice provides Sam with the courage and clarity to sharemounting concerns about her mother Mary Jo with her father Ed.