***WARNING: Graphic Content***

Ciara Glennon's fingernail clippings are the key pieces of evidence the prosecution have to say why they'll prove Bradley Robert Edwards is the Claremont Serial Killer.

The reason why they're so crucial, is because DNA found under those fingernails contained the DNA of the accused, and the prosecution say it got there because of a struggle.

When Ciara Glennon’s body was found on April 3, 1997, she also had defensive wounds on her arms and hands, indicating she fought for her life.

On day 27 of the Claremont Serial Killings trial, the court heard from the mortuary manager who collected those key pieces of evidence. Dr Robert Macdermit, who had conducted more than 10,000 autopsies during his career, clipped Ciara's fingernails, and detailed the grim task that was conducting her post-mortem.

In that autopsy, Ciara's hair mass was also taken, a gruesome task which was explained in full to the court by Dr Macdermit. Ciara's hair is also an important piece of evidence for the prosecution, because several blue and grey fibres, which they say are from the Telstra uniform and Commodore station wagon used by Bradley Edwards at the time.

However, during his cross examination it was revealed Dr Macdermit could have driven a commodore to the post mortem that day.

The defence also noticed what looked like another body present in the room of the time of Ciara's post-mortem. They also got Dr Macdermit to admit they used the same utensils for different body parts, which were rinsed off during the procedure.

Join Natalie Bonjolo, Tim Clarke and Alison Fan as they explain the details of day 27.

If you have any questions for the Claremont in Conversation team, send them in to claremontpodcast@wanews.com.au

For more information on WA's trial of the century, head to https://thewest.com.au/news/claremont-serial-killings