ALTSIREN GUILLOTINES STACEY

Stacey is shown standing in front of a wall, the death sentence is read out by AltSiren. The next AltSiren leads her to the execution room; she straps her onto the machine. She lowers the collar of her blose, carefully adjusts the condemned in position. She asks if she has any last words, and Stacey says that AltSiren could be next. AltSiren doesn't pay attention, the blade falls, and Stacey's body goes limp, headless (the blade is explicitly shown falling on Stacey).

Sometimes later, we see AltSiren on trial, getting condemned to the same death; she no longer looks confident. Might be a nice followup...