Happy faces

Published: 6:05PM Thursday September 02, 2010 Source: 20/20

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His crimes kept an entire country locked in their homes at night.

The Happy Face serial killer murdered eight women in all, and kept police guessing right up until his confession.

But as Keith Jesperson tells 20/20 if he hadn't outed himself, he believes he'd still be killing today.

In a chilling interview from behind bars he tells us why he did what he did, and why he should never be let out.

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