Casualty will be 30 next year. How much longer the Saturday-night medical soap can soldier on must be a question asked regularly in top-level BBC pow-wows: so is its current yen for special, spoof and spin-off episodes a celebratory show of strength or a cry for help?
This week’s edition is entitled Holby Sin City – written in an opening caption using a crimson font mimicking the Sin City graphic novels and 2005 film. The episode is entirely taken up with fussy registrar Ethan (George Rainsford) and his interaction with long-term patient and femme fatale Bonnie (Renee Castle), a 1940s-style sex bomb who might have committed murder. Rain lashes the hitherto rarely glimpsed neon mean streets of downtown Holby. It’s what the