How does law enforcement deal with an individual threatening suicide?

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Miller's father, Kevin, told CNN affiliate WJLA that he believes his daughter was lured to Arndt's residence after she received a call Sunday night from Arndt, who was threatening suicide.

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In all, it's a risky gambit for one of the most successful shows in daytime talk, threatening to tarnish legitimate causes McGraw has taken up, like childhood obesity and suicide prevention.

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