The interest was great when the Forensic Medicine Agency invited the Swedish Deckarakademin on a study visit to its premises in Solna.

About fifty detective writers were on hand to learn from forensic doctors, forensic chemists and forensic psychiatrists how a real murder investigation works.

- I learned that urine is the only body fluid where DNA cannot be traced, and I had written that in one of my previous books.

I take that with me, says Jonas Moström, writer and doctor.

See more in the video above.