希顿侦探在调查新案的同时, 也正在审问20年前的一起罪行. Detective Heaton investigates new murders while questioning a 20-year-old conviction.

希顿侦探调查新的谋杀案,怀疑一名连环凶手尽管20年前被监禁的人坚持他的无辜. Detective Heaton investigates new murders, suspecting a serial killer despite a man imprisoned 20 years earlier maintaining his innocence. 退休的同事透露了原审期间被压制的证据, 引发对过去定罪的问题并迫使官员重新审查案件. A retired colleague reveals suppressed evidence from the original trial, raising questions about the past conviction and pressuring officials to re-examine the case.