David Thorne has spent over 20 years in prison for a murder he says he did not commit. Although he says his case is "Dead in the Water", he hasn't been alone. Sue Thorne, a retired postal worker turned amatuer investigator, has kept his case alive all these years and uncovered new evidence that could point to David's innocence.

Do you have information about who murdered Yvonne Layne? Call our anonymous tip line at 888-863-9550. All tips are anonymous and confidential.

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