Nightmare Next Door (2011)

S3E2 Death in the Family

The peaceful town of Palm Harbor, FL, is shaken when 56-year-old widower David Lunz is shot dead in his own home. The community is left on edge, fearing further violence. It takes investigators over two years to uncover the truth, but a surprising lead discovered 600 miles away ultimately helps them catch a murderer connected to David’s past.