It's good to know that no matter what else changes in London there is one mainstay that has proved indestructible:
The producer of Agatha Christie's thriller "The Mousetrap" predicted on Monday that the world's longest running play would never close. As the classic whodunnit embarked on its 55th year, current producer Stephen Waley-Cohen said he couldn't see an end in sight for the popular London tourist draw. "On first night Agatha Christie said she thought it might get a nice little run. Now it's an institution," he said. "I don't see why it shouldn't run forever."
All hail the cockroach of the theatre world. And we mean that in the nicest possible way...
The play, which traditionally ends every night with theatregoers being urged not to tell anyone who the killer is, boasts three Guinness World Records. As well as enjoying "the longest continuous run of any show in the world", it also lays claim to the world's most durable actor - David Raven played the role of Major Metcalfe for 4,575 performances. Nancy Seabrooke is the world's longest-serving understudy - for 6,240 performances over 15 years. She would sit in the wings patiently doing embroidery and crochet.
Of course we know exactly who the murderer is... we just can't tell you.