Three-part documentary series in which anthropologist professor Alice Roberts and archaeologist Neil Oliver go in search of the Celts - one of the world's most mysterious ancient civilisations.
In 1970s California, a serial killer dumps young boys' bodies along the freeways. An L.A. street reporter on the case receives information that embroils him in the dilemma of a lifetime. Decades later, lost confession tapes help experts uncover the truth.
An LA serial killer goes silent for decades – but he was just warming up.
