The Last Letter: How a Hidden Note Revealed the Heartbreaking ‘Joint Decision’ Behind the Mosman Park Tragedy

In the serene, manicured streets of Mosman Park, a silence has fallen that is far heavier than the usual quiet of this exclusive Perth enclave. The community remains in a state of suspended disbelief following the discovery of the Clune family—Maiwenna Goasdoue, Jarrod Clune, and their two teenage sons, Leon and Otis—within their home on a seemingly ordinary Friday morning. While the initial shock has registered, it is the emergence of a second, deeply personal letter found within the residence that has reframed this event from a crime scene into a profound tragedy of despair.

Maiwenna Goasdoue, her partner Jarrod Clune (both pictured), and their two teenage sons were discovered dead inside their home in Mosman Park, Perth

A person who provided care services for the boys raised the alarm on Friday after arriving at the home for a pre-arranged visit

French-born Ms Goasdoue – who was known as 'Mai' to her friends – had previously described her sons as disabled (pictured, Otis and Leon)

The alarm was first raised when a carer, arriving for a routine visit to support the boys, discovered a note pinned to the front door. It was a final act of protection from parents who, even in their last moments, sought to shield others from trauma. The message was simple and stark: do not enter, call the police. However, investigators have since confirmed the existence of a second, far more detailed document inside the home. This letter has become the focal point of the inquiry, offering a harrowing window into the mindset of two devoted parents who felt they had reached an insurmountable impasse.

According to sources close to the investigation, this second letter outlines a “joint decision” made by the couple. It was not a note scrawled in a moment of sudden rage, but rather a document that suggests significant planning. Heartbreakingly, it includes specific instructions regarding the family’s financial affairs and the handling of their estate, indicating that Maiwenna and Jarrod were trying to maintain order and responsibility even as they prepared to leave the world.

Fellow mum and close friend Nedra said Jarrod (pictured) and Mai were the 'most devoted, loving, protective parents' whose lives revolved around there sons

It was revealed on Saturday that police may have found a 'letter' which contained details indicating there was some planning behind the suspected double murder-suicide

To understand the “why” behind this devastating “how,” one must look past the police tape and into the years of silent struggle that preceded this day. Friends describe the couple not as villains, but as fierce advocates who were slowly ground down by exhaustion. Both Leon and Otis lived with severe autism and required complex, round-the-clock care. Maiwenna, known affectionately as ‘Mai,’ had confided in online support groups about the severity of her sons’ conditions, noting that they were on the “very severe level” of the spectrum.

Nedra, a close friend of the family, has spoken out to correct the narrative, painting a picture of a system that failed a loving family. She describes a life of chronic sleep deprivation and isolation, where the parents felt abandoned by the very support services designed to help them. “They often felt isolated, unsupported, and abandoned by family, friends, support services, schools, the NDIS, and the health system,” she revealed. The tragic implication is that the parents believed their children faced a future without adequate care, leading them to a decision born of fear and misguided protection rather than malice.

Police said no weapon was used during the incident and there is no known history of family violence connected to those involved

Police have confirmed that there was no history of domestic violence and no weapons were involved, further supporting the theory that this was a tragic exit by a family who felt they had simply run out of options. As the investigation continues, the focus remains on the “crushing weight” of 24/7 caregiving without a safety net. The discovery of the letter confirms that this was not a snap decision, but a sorrowful conclusion reached by two people who felt they were screaming into a void where no one was listening.