Episode 1136: The twisted secrets of sadistic killer Graham Dwyer (Part 1)

He’s one of Ireland’s most sinister and twisted killers who groomed his vulnerable victim and gave her a starring role in her own murder.In this two-part Crime World special, written by Niamh O'Connor, we look back on the gruesome details of Graham Dwyer's relationship with Elaine O'Hara, and her…