When author Tracy King was 12 her father was killed on the streets of their Midlands council estate, this lead her family to be further seduced by born-again Christianity and her being exorcised when her trauma was misdiagnosed as “demons”.

She tells Nicky how a second hand copy of a book by astrophysicist and critical thinker Carl Sagan changed her world and led her to science.

Produced by Audio Always