One Of Our Dinasaurs Is Missing didn't quite enjoy the heights of success it was anticipated to by Disney. Its a shame as this is actually an enjoyable, fun comedy with a cast of stars that includes Peter Unistov, Helen Hayes, Derek Nimmo and Joan Sims, who was more famous for her appearances in the classic Carry On film series. A top secret formula is hidden by aristocrat Derek Nimmo inside the skeleton of a dinasaur at the natural History Museum in London. Peter Unistov is mildly amusing as a Chinese agent where as Helen Hayes and Joan Sims are leaders of a gang of unlikeley nannies that even Mary Poppins wouldn't join! Livening things up is a silly, though amusing car chase, lots of kung fu fighting and some flamboyantly over-the-top acting makes this an overly good and entertaining film thats defintley worth a look.