Latest: The sister of Charles Manson's victim Sharon Tate said a prayer for his "soul" after she was told of the notorious cult leader's death at the age of 83 yesterday.

Vincent Bugliosi — the prosecutor in the Charles Manson trial who went on to write best-selling true-crime book Helter Skelter — has died at the age of 80.

Zac Efron will star in JFK assassination movie 'Parkland'.

The way conspiracy theories grow demonstrates the need for investigations to be seen to be thorough and impartial.