A 26-year-old woman charged with murdering autistic teenager Aaron Pajich drew the attention of police to his grave site in her backyard, saying she planned to turn the area into a place for her co-accused and children to relax.
The 18-year-old was found in a shallow grave covered with newly-laid concrete and red indoor tiles at the rear of an Orelia house occupied by Jemma Victoria Lilley and Trudi Clare Lenon, 43, in June last year.
Before police made the grim discovery, they suspected Lenon as she had a phone conversation with Mr Pajich just before he went missing.
The avid gamer was a friend of one of her sons, who also lived at the house along with a younger brother.
When detectives went to the property in Perth’s southern suburbs, Lenon was seen driving past the house and doing a u-turn, and was stopped when one of the officers jumped out into the road.
While Lilley wasn’t a suspect at that stage and detectives didn’t initially have a search warrant, she showed them around the backyard and pointed out a tiled area in the far corner.
Detective Joe Rickerby told the WA Supreme Court on Monday that he noted the area, but Lilley drew his attention to it by saying she planned to create a herb and vegetable garden, “and somewhere for Trudi and the kids to relax”.
Detective Jacqueline Le-Noury said the thin porcelain tiles looked “odd” in a garden area and Lilley volunteered she had laid them herself.
“She appeared to be quite jovial and happy,” Det Le-Noury said.
The court also heard magazines about serial killers were found in her room along with several knives.
She also had a leather motorcycle jacket with “SOS” emblazoned on it.
The trial previously heard Lilley went by the name SOS in text messages with Lenon, and it was the main character in a book she had written about serial killing.