09/21/2011 12:55 pm ET Updated Nov 21, 2011

Retired Homicide Detective Trevor Marriott Takes A Fresh Look At Jack the Ripper

Reporting from London— It's been called the world's most famous cold case, a source of endless fascination and speculation ever since the first mutilated victim was found in a bloody heap 123 years ago on the gas-lighted streets of East London.

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