Plot summary
The AUSA goes for the death penalty which Annalise fights with the help of Tegan. Though Michaela and Connor reveal to Annalise that Gabriel saw the FBI murder Asher, she chooses not to use the recording as it would put Gabriel's life in danger; instead she plays a recording of her conversation with Michaela and Connor admitting they feel coerced into testifying to get the DOJ to drop the death penalty; Michaela and Connor are subsequently arrested. Vivian reveals that Sam's sister Hannah started the whole war against Annalise, but realizes that Annalise doesn't know the true reason why.
Xavier is captured and tortured by Frank, eventually confessing to Nate that he helped murder Nate's father for the governor, supposedly to help prove that it was too dangerous to let criminals on the streets again. After Xavier reveals that his father ordered him to work for the governor, Nate snaps his neck, preventing Xavier from being used as a witness on Annalise's behalf.
Credits
Adapted from Wikipedia contributors, How to Get Away with Murder season 6. HTML formatting and reference markers removed.