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Matthew Pyke and his girlfriend Joanna ran an internet forum site together. One of the users, known only as David from Germany or Eagle_the_Lightening, became obsessed with Joanna and started making regular unannounced visits to their home.
In January 2000, two men in Sheffield were horrified to discover a bag containing the grizzly remains of a man's body. It was so decomposed that South Yorkshire Police's forensics team were unable to determine his identity.
Sharon Malone had just begun training to be a teacher when she suddenly disappeared. Her husband Garry told police that she had run off with a new mystery boyfriend to escape a serious debt. There was no evidence to suggest otherwise - until the police found her abandoned car a month later. When Garry suddenly fled to Spain with his two young boys, the police began to search for Sharon's body.
When 21-year-old Rachel Moran disappeared on New Year's Day 2003, Chief Superintendent Paul Davison controversially organized a mass house-to-house search that caught the attention of the world press.