On 29 October 1912, Margaret Dorothy Zillman, known as Daisy, was murdered at Rosenthal near Warwick – a murder that today still remains a mystery.
Daisy had been working as a companion to an elderly, frail woman at Rosenthal. She was due to return to her family in Caboolture to prepare for her wedding to a widower at Warwick. On the 29 October, Daisy received a box of chocolates in the mail addressed to her, which she set out with the afternoon tea. Daisy offered the chocolates to her employer and took one herself.
Shortly afterward, Daisy became too ill to continue her chores and found her elderly employee writhing in agony. Neighbours heard Daisy screaming, and ran to the house where they found her, gasping that she had been poisoned. They tried to administer an emetic, but Daisy was convulsing so violently that they were unable to do so; she died as they watched helplessly. Her employer’s life was saved by a strong emetic.
The police soon found the chocolates to be laced with strychnine.
An inquest was held and a number of people were suspects, including Daisy’s fiance and a woman who had lived with him for a period. The police arrested Daisy’s fiance; he was tried, but not convicted. Although he was condemned by the community, he denied all charges and proclaimed his innocence until his death.
Daisy is buried at the Nundah Historic Cemetery.