: Facing removal from Reach, Dr. Catherine Halsey activates "Zed Protocol," a contingency plan that grants her exclusive control over the Spartan super-soldiers. She orders them to capture John and Makee and secure the keystones.

: Cortana, witnessing Halsey’s ruthless manipulation, decides to betray her creator. She warns John of the impending Spartan ambush and aids him during the ensuing combat.

: Reverting to her Covenant allegiance, Makee touches the keystone, releasing a massive energy surge that incapacitates everyone nearby. The episode ends with John and Makee sharing one last vision on the Halo ring before she telepathically bids him farewell. Critical Reception