India, June 12 -- The upcoming documentary Did You Kill Emma? revisits one of Scotland's most disturbing cold cases, the murder of 27-year-old Emma Caldwell, whose killing went unsolved for nearly two decades before a breakthrough conviction.

Emma Caldwell disappeared in Glasgow in April 2005. Her body was later discovered in Limefield Woods near Biggar, South Lanarkshire, several weeks after she went missing.

The case remained unresolved for years before being reopened following renewed scrutiny and fresh investigative work.

Emma Caldwell was working as a sex worker in Glasgow when she disappeared in 2005.

The original investigation later came under serious criticism for missed opportunities and investigative shortcomings. Former off...