Casualty, the long-running BBC One medical drama, has wrapped up its latest boxset, Lethal Legacy, which delved into the military background of character Flynn Byron, played by Olly Rix. The storyline also explored the complex relationships between Dylan Keogh (William Beck), his son Matty Linlaker (Aron Julius), and his friend Stevie Nash (Elinor Lawless). The mini-series also highlighted Rash Masum (Neet Mohan), who received positive news about being appointed as a consultant, marking a significant career milestone. Within the emergency department, Rida Amaan (Sarah Seggari) came to terms with her diagnosis of alopecia, a condition that causes hair loss. She received support from Jodie Whyte (Anna Chell), who also became determined to uncover the truth behind a local housing development called Wyvern Hill, suggesting potential environmental or legal issues. Casualty has been off the air for a period but is set to return this week with a special double-bill on Saturday, September 5, marking the show’s 40th anniversary on television. The episode will feature a dramatic event: a massive explosion at St James’ Hospital, which leads to chaos and a devastating impact on the hospital. Paramedics will search through the wreckage for survivors, while the emergency department is overwhelmed by a sudden influx of patients. Dylan Keogh will face a personal tragedy while trying to keep his team united, and both Stevie Nash and Flynn Byron will be trapped in a flooded quarry during the climax of the anniversary special. It has been reported that actors Kirsty Mitchell and Sammy T Dobson will leave their roles as Faith Cadogan and Nicole Piper, respectively, at some point after the anniversary special. This marks a significant change for the show as it continues to evolve its cast and storylines.