52-year-old Sharon Birchwood was killed at her home in the sleepy village of Ashtead, Surrey. In December 2007, Sharon was found by her ex-husband, strangled and trussed up in parcel tape. Ex-husband George Birchwood, with him being the sole beneficiary of her will. Suspicions, therefore, initially fell on Birchwood, who had debts of more than £150,000. After months of painstaking detective work and a crucial DNA breakthrough, Paul Cryne became their prime suspect. Cryne was a former business associate and had flown from Thailand shortly before her death, staying with Sharon's mother in Banstead. Through interviews with the senior investigating officer and those who worked on the case, we learn how a case spanning two continents was solved and the killers brought to justice. Former senior Surrey detective and criminologist Graham Hill – best known for his work on the Madeleine McCann investigation - fronts the brand-new true crime series Murder Detective, which takes viewers inside some of the most complex and shocking cases of recent years.