Nepoose was held in Prince Albert Federal Penitentiary in Saskatchewan while his sister-in-law Debbie and brother Lester continued to try to prove his brother's innocence. They hired former Royal Canadian Mounted Police (RCMP) officer Jack Ramsay to investigate, who found instances of perjury and poor police work in the case, including "illegal threats and intimidation tactics" to get the witnesses to perjure themselves. He asserted prejudice against First Nations people and that if Nepoose were white the "case would never have gone to court", comparing the case to that of Donald Marshall Jr., a Nova Scotian Mi'kmaq also wrongly convicted of murder.
