A 51-year-old man who has been wrongfully imprisoned for 22 years, claiming innocence in a murder case which forms the main plotline, highlighting systemic issues in the criminal justice system.

The defense lawyer who initially represents Quincy, known for his competent defense but later intimidated away from appealing, paving a path in the narrative that parallels Cullen Post's journey.

A former sheriff involved in the wrongful framing of Quincy, driven by personal benefit and serving as an example of corruption within the criminal justice system.

Another wrongfully convicted man whose case is resolved through DNA evidence, representing a secondary plotline dealing with practical and scientific issues in the justice system.

An expert witness whose legitimate scientific testimony helps counteract unreliable forensic evidence in the story, bringing professional credibility to the case.

A young woman who falsely testifies as part of a manipulated court process, representing vulnerable individuals caught up in a corrupt judicial system.

A former inmate and the first person Post helped exonerate, now working for Guardian Ministries and providing crucial, albeit legally questionable, support to the organization.