Young friends David Spencer and Patrick Warren went missing in Birmingham in 1996. Their bodies were never found. But now, Emilia and David discover new evidence, which leads to a prime suspect.

Estate agent Suzy Lamplugh went missing in 1986. No one was ever charged. But now, tantalising and chilling clues help Emilia and David narrow the suspects down to one man. Will he reveal the truth?

Emilia and David search for witnesses, other potential victims and a suspect as they investigate the brutal and unsolved 1967 murder of teenager Rita Ellis

David, Emilia and Dr Graham Hill examine the case of eight-year-old Vishal Mehrotra, whose remains were found in West Sussex seven months after he went missing in London in 1981

David, Emilia and Dr Graham Hill examine the tragic murder of Deborah Wood, who disappeared after leaving a city centre bar in Leeds in early 1996.

David, Emilia and Dr Graham Hill reopen the case of Trevaline Evans, who left a note saying 'back in two minutes' on the door of her antique shop in 1990, but never returned.