The recent death of a female heroin addict prompts Rush and the team to reopen the supposedly solved 1982 murder case of Lindsay Chase, the addict's former co-worker. Lindsay's husband, Dr. Stephen Chase, was convicted of her murder and has spent the last 23 years in prison, insisting he's innocent. When the detectives discover that Lindsay was involved with manufacturing illegal drugs - something her husband didn't even know about - the list of suspects grows.