Former Speaker of the House Newt Gingrich and former Massachusetts Gov. Mitt Romney chat after finishing a GOP debate in Sioux City, Iowa, earlier this month. Scott Olson/Getty Images hide caption

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Death investigations among seniors are often skipped, leaving the growing population vulnerable to neglect and abuse. Andres Cediel/Frontline hide caption

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Wouldn't you love to know what she's jotting down? Of course you would. iStockphoto.com hide caption

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