Dr Cassidy's Casebook: A harrowing look behind the scenes of some of Ireland's most gruesome deaths Dr Marie Cassidy shares her insights and experience of spending over two decades as caretaker of those who died in the most terrible of circumstances Former State Pathologist Dr. Marie Cassidy reflects on the issues and cases which shaped her career in Ireland Tue, 11 May, 2021 - 12:50 Ciara McDonnell Formidable, warm and empathetic, Dr Marie Cassidy's face is well-known to us all after two decades as State Pathologist. In the first instalment of 'Dr Cassidy's Casebook' on Monday night, we were treated to a behind-the-scenes look at her career via three cases of murder that required forensic detective work to reveal the truth.