News organisations from across the world have sent crews and reporters to Kos in Greece to follow the progress of South Yorkshire Police, as they search for clues relating to the disappearance of Ben Needham.
Ben, who was just 21 months old at the time, went missing on July 24, 1991, when his mum Kerry, from Sheffield, left him with her parents Eddie and Christine while she went to work in a hotel.
Today an excavation of the site where some investigators believe Ben may have been buried in rubble, has begun.
Cadaver dogs, specially trained to pick up the scent of human remains, are being used on farmland where Ben Needham was last seen.
Kerry Needham has spoken exclusively to Calendar as police step up their search to find her son Ben, on the Greek holiday island of Kos.
Police from the UK are using metal detectors in Greece to search the farmland where missing toddler Ben Needham was last seen alive.