Joe Hunter, a contestant who appeared on seasons 48 and 50 of the reality television show "Survivor," is pursuing what he believes is justice for his late sister Joanna, whose death was officially ruled a suicide.

Hunter maintains that his sister was murdered, contrary to the official determination by authorities. He has made it his mission to serve as an advocate for Joanna and to seek answers about the circumstances surrounding her death.

The former reality show contestant is working alongside his mother in their efforts to investigate the case and bring attention to what they believe are the true circumstances of Joanna's death. Their advocacy work extends beyond their personal case to supporting others who have experienced domestic violence.

Hunter's story is being featured in a report by CBS News correspondent Natalie Morales on the network's "48 Hours" program. The case highlights ongoing questions about the initial investigation and the family's determination to continue seeking answers despite the official ruling on the cause of death.