Cold case reward may be one step closer as victim's brother calls for justice in episode 4 of Annette: Cold Case Unlocked

The brother of Annette Deverell believes only money will help unlock the mystery of who killed his beloved big sister almost 40 years ago.

Australian Community Media's true-crime podcast Annette: Cold Case Unlockedhas been examining the suspicions and secrets surrounding the September 1980 disappearance and death of 19-year-old Annette from the small coastal town of Mandurah, south of Perth.

The fourth and final episode of the special investigation begins with a surprising phone call we received about the panel van which retired police detective Jeff Beaman said Annette was last seen in on the night she disappeared.