Blood spatter expert Doctor Claudia O’Sheil’s evidence put a killer behind bars – or so everyone thinks.

Since the trial, Claudia has learned a horrific truth: her evidence and her testimony were wrong. Now as she takes the stage to give a speech before London’s elite specialists, Claudia has to choose: keep lying and leave the wronged killer behind bars or stand up, tell the truth and rip her life apart.

What would you do?