A Quest for Revenge [Season 8, Episodes 13-18]

Dana the double agent

Dana kills Bill Prady when he tries going to Hastings
Turns out Dana’s actually a plant and working with Samir
CTU discover this when she helps Tarin escape (he kills himself to distract CTU) and keep Hassan captive

Trade for Hassan

Samir offers Taylor a trade: give them Hassan and they won’t detonate the “radiological dispersal device” in Manhattan
Taylor’s against this but General Brucker convinces Rob Weiss to act, sending a covert team to kidnap Hassan
Ethan discovers their plot and has a heart attack, from which Rob and Brucker leave him without medical help until Hassan is in captivity
Jack fends off the team but Hassan learns of the trade and offers himself up
Samir reads a statement of Hassan’s crimes and then slits his throat

Renee’s death

A mysterious figure posing as a medic, Pavel Tokarev, injects Samir with a toxin that kills him, and Renee briefly notices him as he leaves as though she recognises him
Jack and Renee go back to his apartment and have sex
Pavel follows them, and shoots Renee to cover the tracks of the Russian involvement
Jack gets Renee to a hospital but she dies

Jack begins quest for revenge

To find out about the Russian involvement, Jack goes to the arraignment of Sergei Bazhaev
Bazhaev tells him that the Russian government were involved in everything that happened and that Dana was their agent at CTU
Jack questions Dana, who will talk for an immunity deal
Taylor goes to CTU to talk Jack out of this and has him locked down (he steals a helicopter and escapes) because she doesn’t want him derailing the peace agreement

The return of Charles Logan

Logan leaves several messages at Ethan’s office after learning of the Russian intention to pull out of the agreement
He speaks with Mikhail Novakovich, the Russian foreign minister, to keep him at the table by blackmailing him with his knowledge of Moscow’s involvement in the day’s events

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