Swedish twin sisters Ursula and Sabina Eriksson travel to England and caused carnage by running repeatedly into traffic on a busy stretch of the M6 in an apparent suicide pact. While Ursula was air lifted to hospital for emergency surgery, Sabina was arrested and held in custody, but an unnerving comment she made while in custody soon took on a dark dimension.

Sabina Eriksson is released from custody and meets 54-year-old Glenn Hollinshead, who offers her a place to stay. The next day he is found stabbed to death in his home and Sabina goes on the run before jumping off a footbridge over the A50, but she is arrested and goes for trial. With testimony from those involved in the case, including the prosecution lawyer, as well as those who spent time with Sabina, this film follows the lead-up to her trial and hears from the victim's brothers about the devastating impact it had on their family.