Episode 10 of "Countdown" kicks off with Shepherd meticulously deciphering the intricate mechanisms of the bombs. In tandem, she and Bell hastily rip out the tablets, severing the bombs' connections. Consequently, when Borys attempts to detonate them using the remote, it fails to respond, and the bombs remain defiantly silent.
As the chase intensifies, Finau sharp-eyed catches sight of Andrej and swiftly takes him down. Meanwhile, Mark's condition worsens, yet he manages to summon the strength to eliminate Borys. The subsequent celebration is tinged with melancholy, as the task force members bid each other farewell, each heading in their own direction. Blythe returns to the comfort of his wife and son, while Bell and Shepherd share a heartfelt dinner. Thanks to Blythe's interventions, Shepherd has secured a position in Washington D.C. Their evening takes an unexpected turn when they bump into Molly, who is indulging in a night of bar-hopping. She playfully offers to be their wingwoman, amusing Bell greatly. After Molly departs, Shepherd entrusts Bell with keeping an eye on her.
Despite putting up a valiant fight, Mark is eventually led by Oliveras to Dr. Julio, who imparts a glimmer of hope in the form of a new clinical trial. Finau's hard work is recognized with a promotion to sergeant, and his family, along with colleagues from the precinct, celebrate this milestone with him.
Bell delves deep into Valwell's financial records and uncovers a startling revelation: it was the District Attorney who tipped Borys off about the SWAT search. The FBI浪 swiftly moves in to arrest Valwell.
As the day preceding Mark's treatment dawns, Oliveras checks on him, her concern evident. She hints at wanting to be by his side through it all, but Mark respectfully declines, wanting to give their relationship a fair chance only if he survives the ordeal.
On the dawn of Day 1, Mark isn't embarking on this journey alone. Oliveras has informed the task force, and they have all rallied to lend him their unwavering support. Ten months have since slipped by, and Agent Ryan Fitzgerald finds himself immersed in scanning civilian threat reports. A cleaner named Patricia has left a chilling voice message, describing a cabin brimming with firearms, maps, and photographs of government officials, the President of the United States included. At the message's conclusion, an unsettling noise echoes through.
Driven by curiosity and duty, Fitzgerald sets out to investigate and discovers Patricia's lifeless body within the cabin. As he scans the premises, he unearths a manifesto concealed in a drawer, brimming with perplexing codes. The task force reassembles, with the notable exception of Oliveras, who is reportedly engaged in a perilous assignment. Mark, now mostly recovered, inquires about Oliveras, only to be informed by Blythe of her dangerous task. In her stead, they welcome Fitz, their latest team member, a blend of chatterbox and clown. He fills them in on his discoveries and outlines their new mission: to track down the suspect and ascertain if he poses a genuine threat to the POTUS and the Governor of California.
Bell and Shepherd delve into deciphering the diary, and just as Bell is about to share something with Shepherd about Molly, Mark proposes a visit to the cabin. As Countdown Episode 10 draws to a close, Mark uncovers a clandestine tunnel beneath the cabin, designed for target practice with a sniper rifle. The suspect's precision is flawless, painting a picture of both menace and mastery.
