In 2008, Melbourne man Fred Boyle was convicted of murdering his wife Edwina in October 1983 — then keeping her body sealed inside a 44-gallon drum for 23 years, moving it with him from house to house as he raised their two daughters.

Tracey Franze knew Edwina through a shared love of horses in the late 1970s. She watched Fred's cruelty up close — towards animals, towards the truth and ultimately towards the woman who devoted her life to her family. When Edwina vanished, Tracey and her friend Lee went to Dandenong Police Station. They were dismissed.

Now, almost 40 years on, Tracey has come forward with something she's never spoken about publicly. It's raised questions that have never been answered, and a possible connection to one of Victoria's most chilling unsolved cases — the Tynong-Frankston murders of the early 1980s.