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Spoiler Warning: This answer contains major plot details from Adolescence
Adolescence

Why did Jamie kill Katie in Adolescence?

Quick Answer

Jamie killed Katie due to a toxic combination of online radicalization, rejection, and twisted beliefs about masculinity. The show reveals his descent through flashbacks and interviews.

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Detailed Explanation

The show reveals Jamie's motive through its fragmented, intimate storytelling. Jamie became radicalized through online "incel" communities and developed an obsession with Katie. When she rejected his advances, he interpreted it through the lens of the hateful ideology he'd absorbed. The murder wasn't impulsive—it was premeditated, driven by entitlement and rage that had been building for months. The show's most devastating element is showing how Jamie's parents, teachers, and friends all missed the signs, trapped in the belief that "he's just a kid."

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Adolescence

Jamie Miller

The Boy Next Door

He was just a child. Until he wasn't.

She made me feel like nothing.

1+ victimsCaptured

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