Who Killed Emma? The Chilling True Crime Case Behind the Documentary-Emma Caldwell

Did You Kill Emma? is a true-crime documentary set to release on Prime Video in June 2026. The title echoes the question at the heart of one of Scotland's most haunting murder cases-a mystery that remained unsolved for nearly two decades before investigators finally found an answer.

Emma Caldwell was a 27-year-old sex worker in Glasgow's red-light district. She disappeared on April 4, 2005, and her body was discovered five weeks later in a remote wooded area near Roberton in South Lanarkshire. She had been strangled, and her death quickly became one of Scotland's most high-profile unsolved murder cases.

Was Iain Packer the Prime Suspect?

During the investigation, Iain Packer was questioned by police six times. He admitted that he had taken Emma and at least five other women to the remote woodland area for sexual encounters. Several women involved in the sex trade also told police that, before Emma's death, they had been driven by a client to the same secluded location. In each case, they identified the same man from police photographs: Iain Packer.

However, the investigation took a deeply controversial turn when four retired police officers later claimed they had been instructed by senior officials not to focus on Packer. Instead, they were allegedly directed to build a case against four Turkish men, who were eventually charged with Emma's murder in 2007.

The BBC Investigation and the Chilling Interview

In an interview, Iain Packer insisted on his innocence, saying:

"I can look you in the eye and say I had nothing to do with it whatsoever. I'm not a violent person."

BBC investigative journalist Sam Poling was approached by Packer in 2018 after she made a documentary about Police Scotland. Just days after that interview, Packer was arrested and later convicted of assaulting his former partner by choking her.

The BBC documentary Disclosure: Who Killed Emma?, which aired in 2019, reignited public attention around the case and is widely credited with helping trigger the events that eventually led to Packer's arrest.

Conviction and Sentence

In February 2022, Packer was formally charged with offences connected to Emma Caldwell's death, along with multiple rape charges. In January 2024, he was convicted and sentenced to 36 years in prison for the rape of 22 women, including the murder of Emma Caldwell.

Handing down the sentence, Lord Beckett described the gravity of Packer's crimes and the prolonged campaign of sexual violence. Following the conviction, Police Scotland publicly apologised, acknowledging that the force had failed Emma, her family, and several other victims.

A Case That Exposed Systemic Failures

The Emma Caldwell case is not only the story of a brutal murder but also one that exposed serious institutional failures. It raised difficult questions about how crimes involving sex workers were investigated and highlighted how investigative journalism, rather than law enforcement alone, helped bring the truth to light after nearly 20 years.

With the release of Did You Kill Emma? on Prime Video, a new audience will revisit the case and the extraordinary investigation that ultimately led to justice. The documentary is expected to explore not only the murder itself but also the systemic shortcomings and the persistence that finally uncovered the truth.