Behind the scenes at Missing Persons Units. There's an update on the story of teacher Sarah Flooks, who went missing in March 2006, sparking a nationwide search. Show more

Behind the scenes at Missing Persons Units. There's a look at the case of Cambridge graduate Robbie Carroll, who disappeared in February 2006. Show more

Behind the scenes at Missing Persons Units. Two Italian teenage sisters walked out after a family argument at home and haven't been seen since. Show more

Behind the scenes at Missing Persons Units. A close knit community in southern Ireland has been devastated by the disappearance of Barry Coughlan in 2004. Show more

Behind the scenes at Missing Persons Units. In August 2004 Brian Watson walked out of a Derby hospital and disappeared without a trace. Show more

Behind the scenes at Missing Persons Units. Jamie Thompson never returned from a six-month trip to Dublin in 1994. Show more

Behind the scenes at Missing Persons Units. Tom Moore was diagnosed with schizophrenia and frequently travelled abroad on religious pilgrimages before disappearing in July 2003. Show more

Behind the scenes at Missing Persons Units. A brother and sister have found a death certificate and want to find out it's the brother they haven't seen since 1964. Show more

Behind the scenes at Missing Persons Units. Anne Simpson retired to Skegness with her partner, but disappeared after a weekend visit from her family in September 2004. Show more

Behind the scenes at Missing Persons Units. Heather and Sharee make one last attempt to find their mother, Dilys, who has been missing for twenty years. Show more