Detectives from across the UK are live in the Crimewatch studio, ready to take your calls.
Royal Military Police appeal for information on the disappearance of two-year-old Katrice Lee, who went missing from a British army base in Germany in 1981. They are hoping new computer-generated imagery of the crime scene and age-progressed photographs of how Katrice might look today will spark fresh leads.
Plus, the inside story of how detectives proved the parents of 17-year-old Shafilea Ahmed were guilty of her brutal murder, in a shocking case of so-called 'honour killing'. Police went to great lengths in a nine-year investigation, even planting a listening device in the family home. Ultimately, the case would rest on the courage of Shafilea's own sister to break ranks and speak out about the night she witnessed her mother and father commit murder.