In 1944, Cadden was charged and convicted for the murder of 33-year-old Helen O'Reilly. She was sentenced to life in prison, and after a year at Mountjoy prison, she was declared insane and moved to the criminal lunatic asylum Dundrum, where she died of a heart attack on 20 April 1959.
In 1944, Cadden was convicted of murdering Helen O'Reilly, a 33-year-old woman. She served time at Mountjoy prison before being transferred to Dundrum Asylum where she died from a heart attack in 1959.