The three people accused of murdering Jarrad Lovison

How a seven-foot-tall dog lover died and how he knew those accused of murdering him is still shrouded in mystery six months after he vanished. 

Jarrad Lovison, 28, went missing while riding his bike near Moe in country Victoria on April 16 and his body was found in bushland on May 23.

After months of anguish for his family and friends, barista Samantha Grace Guillerme, 24, was arrested on Tuesday and charged with murder.

The next day Jake William Brown, 28, and Andrew James Price, 47, were also charged with murdering Mr Lovison in Moondarra.

Even with his accused killers behind bars, the case still has far more questions than answers, even after six months of investigation. 

Jarrad Lovison, 28, (left) was found dead in May after disappearing a month earlier. Three people were charged with his murder this week, and his ex-girlfriend Ange O'Brien, 44, (right) was released without charge

Jarrad Lovison, 28, (left) was found dead in May after disappearing a month earlier. Three people were charged with his murder this week, and his ex-girlfriend Ange O'Brien, 44, (right) was released without charge

After months of anguish for his family and friends, barista Samantha Grace Guillerme, 24, was arrested on Tuesday and charged with murder

After months of anguish for his family and friends, barista Samantha Grace Guillerme, 24, was arrested on Tuesday and charged with murder

A third person arrested, but later released without charge, was Mr Lovison's ex-girlfriend Ange O'Brien, 44, whom he dated on and off for three years.

But Ms O'Brien had been dating Price for at least the past year - including the six months between Mr Lovison's death and his arrest.

Ms O'Brien has for the past year been dating Andrew Price, 47, (pictured together) who is accused of murdering Mr Lovison

Ms O'Brien has for the past year been dating Andrew Price, 47, (pictured together) who is accused of murdering Mr Lovison

How the much-younger Brown and Guillerme fit into the frame and the circumstances of the puzzling murder are very much up in their air.

Friends believed after Guillerme was arrested that she couldn't have single-handedly killed Mr Lovison, as police allege, as he stood at more than seven feet tall with a muscular build.

One theory police are investigating, which friends and locals have also speculated about, is that Mr Lovison was given a 'hot shot' of drugs that triggered an overdose. 

More mysterious events were associated with the case, such as a report of Mr Lovison's green mountain bike being found propped up against a tree.

The bike was reported seen two days after he body was found on Becks Bridge Rd, Tanjil South, just north of Adam View Court where one of the arrests was made.

Police said it was then supposedly whisked away by a white wagon two hours later.

Guillerme also shared a photo on Instagram the day after he disappeared of her dog at the Lyrebird Forest Walk about 60km to the south of Moondarra.

Alongside the photo, she wrote the caption 'today's adventure'. 

Jake William Brown, 28, was arrested on the same day as Price and both were charged with murder

Jake William Brown, 28, was arrested on the same day as Price and both were charged with murder

How the much-younger Brown (pictured) and Guillerme fit into the frame and the circumstances of the puzzling murder are very much up in their air

How the much-younger Brown (pictured) and Guillerme fit into the frame and the circumstances of the puzzling murder are very much up in their air

Guillerme's alleged involvement is puzzling by itself, as friends said she came from a good family and had 'a bright future'.

Shocked former high school classmates also described her in glowing terms on social media.

Ms O'Brien remained close to her ex and frantically searched for him after his disappearance, posting increasingly desperate Facebook pleas.

She was concerned he had met with foul play as Mr Lovison wouldn't have abandoned his beloved dog Slade.

'No one has heard from him at all from nearly 9 days and he left his best friend at home... something isn't right!' she wrote on April 24.

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