Wife of Albert King. She didn't report King's disappearence for many months because she thought he either abandoned his family or ended up in jail somewhere. She provided testimony on King's financial status and the critical check which was used to track Grant's bayou lair for the final confrontation.

Seb Pinnick's wife. She provided testimony crucial to determining the Cannibal's car description, the small lead which pulled thread and unwound the mystery behind Grant. Due to faulty memory of her and her neighbors, and purposeful withholding of information such as Seb's communist beliefs and tax evasion, she was not called to deposition for the trial of Edward Sumner Grant, instead replaced by more reliable witnesses.

A jack in the box employee where Grant and Pinnick took dinner. He got a clear view of Grant's face and provides a solid tie between Grant and Pinnick's murder. He was notably hostile to investigators but was convinced to testify. His testimony was used to construct a composite sketch.

A Cajun fisherman who stumbled upon the murder and body of Seb Pinnick. He did not report it for a considerable time due to superstition (he believed the truck was a dragon), but eventually called police. He contributed to both descriptions of the Cannibal's car and also the composite sketch of his face.

A Louisiana Highway Patrol officer who is put on the Crescent City Cannibal Taskforce after his repeated prescence at crime scenes and involvement in APDs and statewide search operations. An important witness in the state and securing of crime scenes upon discovery. He also took part in the raid on Grant's bayou house, sustaining light wounds.

A small-time Italian mobster and closeted bisexual man. He runs the Silver Screen, a popular movie theater and gay bar of which Alec Pham was an employee. Despite his mafia associations, Solano hates violence and genuinely cares for his business and staff outside of his obligation to the mob. He, after some persuasion from investigators that his testimony could protect those he cares about, is extremely cooperative with the investigation. His testimony pieces together Pham's last hours of life.

A WWII veteran diagnosed with severe PTSD and schizophrenia, currently working at his parent's butcher shop downtown. His close correspondence with Edward Sumner Grant made him of interest to investigators. He would not willingly testify against Grant, who he considered his friend, until LeBlanc appealed to him as a fellow veteran. His testimony directly tied Grant directly to King's disappearance and was extremely helpful in discovering his wartime history.