One of Our Dinosaurs Is Missing (1975)

In an exhilarating blend of espionage and adventure, Lord Southmere, a daring fugitive from China, harbors a secret that could ignite international conflict - a microfilm containing the enigmatic formula for "Lotus X". Pursued relentlessly by tenacious Chinese spies, Southmere stashes the microfilm within the hallowed bones of a colossal dinosaur at the National History Museum. But with the relentless spies hot on his trail, he is forced to entrust his former nanny, Hettie, with the daunting task of retrieving the microfilm. Cornered and recaptured by the head spy, Hnup Wan, Southmere's fate hangs in the balance. Hettie, joined by her friend Emily, springs into action, rallying a band of intrepid nannies to unearth the hidden microfilm. Yet, their mission proves to be more challenging than anticipated. Meanwhile, the cunning spies launch a bold plan to snatch the dinosaur skeleton itself. Unyielding, Hettie and Emily, along with a young, daring nanny named Susan, counteract by spiriting the dinosaur skeleton away on an extraordinary journey through the English countryside. The plot thickens when Hettie's young charges, the mischievous Lord Castleberry and his innocent younger brother Truscott, become entangled in the unfolding chaos. A frantic race against time ensues, leaving Lord Southmere's fate precariously poised and the safety of the world hanging in the balance. "One of Our Dinosaurs Is Missing" is a whirlwind tale of secrets and spies, nannies and dinosaurs, intertwining danger and comedy against the backdrop of an impending international crisis. Will Hettie and her team outwit the spies and save the day? Or will the world fall into the hands of those who seek the power of Lotus X? The outcome lies nestled within the bones of one unforgettable dinosaur.

One of Our Dinosaurs Is Missing is an action movie featuring Derek Nimmo and directed by Robert Stevenson.

It is possible to buy One of Our Dinosaurs Is Missing on Amazon Video, Apple TV, DIRECTV, Google Play Movies, Microsoft Store, Vudu and YouTube.