Episode 1

1989: Mary Veronica Druhan, charged with double murder and sentenced to life for a 1988 arson attack on a house used as a squat by alcoholics and vagrants in Kingston upon Thames. But with eyesight problems and arthritis, was she really capable of lighting fires and escaping without a splash of accelerant on her person?

Episode 2

1985: Mark Cleary, charged with murder and sentenced to life imprisonment when a ten-year old boy, Wayne Keeton, is assaulted and thrown into a river in the village of Bestwood near Nottingham. This happened despite a murderer, Philip Atherton already being identified, after he changed his story to make Cleary an accomplice.