In 2022, 35-year-old Zara Aleena was beaten to death just ten minutes from her London home, but the only evidence left by her brutal killer was one bloody fingerprint at the crime scene.
In 1975, 11-year-old schoolgirl Lesley Molseed went to the shops and never returned to her family home in West Yorkshire. The ensuing police investigation led to a tragic miscarriage of justice before DNA evidence identified the true killer.
Teenager Naomi Smith went to post a letter for her mother in 1995 and never came back home, but a bite mark left on her body gave police crucial evidence to help reveal her killer.