Dubious bite mark evidence - and the controversial dentist presenting it - cement convictions in the murders of two Mississippi toddlers in the 1990s

Despite presenting exonerating DNA evidence, the Innocence Project lawyers face a racially charged battle in Mississippi to free two men imprisoned for decades.

In a crusade to discredit bogus forensics and raise awareness, the Innocence Project enlists allies including former convicts betrayed by the system.

A drive-by shooting homicide in 1991 stokes an LA gang war. Teen Franky Carrillo is arrested, beginning a nightmare driven by defiant officials.

Stunning twists revive Franky's hopes for exoneration when his new legal team untangles the flawed eyewitness testimonies that sealed his fate.

In 1984, a teen is convicted when multiple rape victims identify him with "100% certainty." Decades into his imprisonment a harrowing truth surfaces.

Shortly after a Philadelphia murder, nearby Chester Hollman is arrested. To guarantee his conviction, police and prosecution cross indefensible lines.

A problematic police sketch incriminates a rape suspect in 1994, while a trove of DNA evidence goes untested. Then a determined new lawyer steps in.