Two days before Christmas in 1996, Sophie Toscan du Plantier was brutally murdered at her holiday cottage in Schull, West Cork. The murder rocked the quiet Irish town and 24 years later, the case remains a mystery. This series sees six-time Oscar-nominated filmmaker, Jim Sheridan, piece together original evidence, never-before-seen footage, and interviews with those closest to the case to try to make sense of what really happened.