20/20 - Season 2025 Episode 16 -

When 21-year-old Johnia Berry is found clinging to life in the hallway outside her Knoxville, Tennessee, apartment, all eyes turn to her roommate with suspicion in the gruesome attack, even though he had also been stabbed. When police rule him out as a suspect, they continue to investigate multiple leads, but the case goes cold. Johnia's mother, refusing to give up, starts an unrelenting crusade to find justice for her daughter. For the next three years, she searched for answers, determined to find the person responsible for her daughter's murder. What transpired next was truly shocking — the murderer is someone no one could have suspected. Co-anchor Deborah Roberts reports on this harrowing case and a mother's unstoppable fight for justice.