That was based on one of 27 novels by JB Priestley, who was also no slouch in the play-writing department (he knocked out 47). Now, not all of his plays are box-office certs, but An Inspector Calls has proven pretty durable. Less well known are his "Time" plays: three tightly-structured family dramas that play thriller games with past, present and future. The best of these, Dangerous Corner, is back. Definitely worth checking out.
Palace Theatre, Clarendon Rd, Watford (01923 225671) 5-27 Nov