Channel 5's true-crime documentary will look at the mysterious disappearance of Suzy Lamplugh, an estate agent who went missing without a trace in 1986 after supposedly showing a man around a house. She was declared dead in 1994, but was her killer ever caught?

When did Suzy Lamplugh go missing? 

Suzy, who was 25 at the time of her disappearance, had made a note in her diary about meeting with a 'Mr Kipper' to show him around a house. As such, it was believed that she had intended to meet the man outside a property for sale of Shorrolds Road, and witnesses saw a woman matching Suzy's description speaking to a man holding a bottle of champagne before getting into a BMW.