BC Mental Health and Substance Use Services (BCMHSUS) delivers specialized mental health and substance use care across British Columbia, primarily for people with complex needs who are involved with the justice or health care systems. Operating under the Provincial Health Services Authority (PHSA), BCMHSUS includes programs such as the Forensic Psychiatric Services, Heartwood Centre for Women, and Red Fish Healing Centre. Their work integrates clinical care, research, education, and system-level improvement, with a focus on trauma-informed, person-centred approaches.