Davina McCall and Nicky Campbell present the documentary that combines new DNA technology with painstaking detective work to find answers for foundlings. In 1966, infant Simon was left in the outside toilet block of a mother and baby home in Neath in south Wales. In an unrelated incident, four years later in Christchurch, England, newborn Lisa was left in another baby's pram. Almost 60 years later, Simon and Lisa are still desperate to know who left them and why.