The inquest into the overdose death of an inmate at the Southwest Detention Centre in Windsor starts next Monday.
Joseph Gratton died on October 30, 2019, one of five men to overdose at the detention centre over 16 days.
Gratton was 31.
The inquest, conducted by video conference, is expected to last five days and hear from five witnesses.
The inquest will examine the circumstances surrounding Gratton's death and provide recommendations to prevent future deaths.
The mandatory inquest will start at 9:30 a.m. Doctor Richard Wells will be the presiding officer and Julian Roy will be the inquest counsel.