The Maze Runner - The death Cure (Spoiler 1):

Newt:
The Death Cure: (page 250)
…”Do it before I become one of them!”
“I…”
“KILL ME!” And then Newt’s eyes cleared, as if he’d gained one last trembling gasp of sanity, and his voice softened. “Please, Tommy. Please.” 
With his heart falling into a black abyss, Thomas pulled the trigger
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*SOBS*