Annette Hewins stands in the dock accused of triple murder. The prosecution claims Annette syphoned petrol from her car to commit arson, tragically taking the lives of a mother and two children. But what do we know about the type of petrol used in the fire, and was it the same as the petrol Annette bought for her car? At trial, an astonishing battle between two forensic scientists commences in the courtroom, one for the prosecution and one for the defence. They conduct very different tests, so which scientist was correct? A world-leading arson investigator re-examines the tests conducted by the forensic scientists. What will he reveal, and what does this mean for Annette and her co-defendants Donna Clarke and Denise Sullivan? An Inspire Film and Television Production for BBC Sounds. Credits: Narrator: Nicole Jacob Producer and Editor: Amy Derrick Finishing Editor: Steph Lynch Additional Sound Design: Kevin Langhamer Post Production: Bang Executive Producer: Wayne Derrick