The Campden Wonder is the name given to events surrounding the return of a man thought murdered from the town of Chipping Campden, Gloucestershire, in the 17th century. A servant, his mother and brother were hanged for killing their master. But following the man’s return, it became clear that no murder ever took place despite testimony attesting to the crime by the accused. The story attracted popular attention in England in the years 1660–1662.
This case lead to the “no body, no murder” rule for hundreds of years. (Nowadays, you can actually be charged for murder without a body in a lot of jurisdictions. [x])
Source: Ultra Facts