A Killing On the Cape

3. More Leads, More Dead Ends

<p>Police expand their search for Christa Worthington's killer, looking at an ex-boyfriend and even Christa's own father. But a match on a crucial piece of D.N.A. evidence continued to be elusive, forcing police to take an unorthodox approach to find the killer and one that would grab national headlines. Support this podcast with a review --------&gt; http://bit.ly/2xj9fk8 *** Can you help catch a killer? Check out our other series, "A Murder On Orchard Street." Listen and subscribe: http://apple.co/2xuXURv *** ** Subscribe to "Start Here," the new daily podcast from ABC News, available on Apple Podcasts (https://apple.co/2pvq8Ws), Google Podcasts (http://bit.ly/2JZSK70), or your favorite podcast app! "A Killing On the Cape" is a production of ABC Radio and ABC News "20/20." Subscribe to the weekly "20/20" podcast on Apple Podcasts (http://apple.co/2zKPW5c) or wherever you're listening right now. Find more ABC podcasts at http://www.abcnewspodcasts.com</p> <p>Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a></p>

It was a crime that rocked an idyllic seaside town in Cape Cod -- the 2002 murder of Christa Worthington, found stabbed to death with her 2-year-old daughter, unharmed at her side. What came next was a three-year search for her killer that would involve unorthodox steps by police, a lengthy list of potential suspects, and an entire town under suspicion. Christa's trash collector, Christopher McCowen, would eventually be convicted of the crime, but his trial would raise questions about the evidence, investigative methods, and whether racial prejudice played a role. Now, ABC Radio and "20/20" take a look at all the evidence and for the first time ever, hear directly from Christopher McCowen, to examine whether the right man is behind bars.