When a young mother vanished in Hertfordshire, police suspected she'd run off with a lover. When they eventually found her body, they had only one suspect in mind.

In 2000, the grizzly remains of a man were found in Sheffield and, with just a clay mold of his decomposed face, police uncovered a chilling tale of deathly greed.

When a 21-year-old woman was blindfolded, driven to a caravan in Suffolk and raped, what small details she could recall contributed to putting together crucial evidence to catch her rapist.