Once Barquith had recovered, he led Mike to a disused office behind the Space Pavillion. It was locked from the outside with a padlock that stood no chance against Mike's Swiss army knife. As they opened the door, Mike saw Ellie sitting on the floor, looking very sorry for herself. "Thanks Mike!" she said as she looked up. "I knew I could count on you to crack my code!"
"So the Lovell Legacy exists?" said Mike.
"Yes," said Barquith. "Turing had designed a machine that could break any code. It was at about the same time as his court case, and he was suspicious of the authorities interfering in his work. He asked Lovell to build it and then hide it somewhere at Jodrell Bank until the furore of his trial had blown over - but he died soon afterwards, so it stayed hidden and was soon forgotten about. Now a rogue section of MI5, led by the mysterious Lungrem, have learned about the device and are trying to find it. If they find it they'll be able to break into any email account and any mobile phone in the country, or even take control of any electronic device. The consequences don't bear thinking about!"
"I need to leave," said Barquith. "I was working on a lead on Lungrem before I was abducted. I think I'm close to working it out but my notes are back at the Museum. Do you feel safe enough to stay here?" Mike and Ellie looked at each other, before nodding in agreement.
As Barquith left, Mike and Ellie looked around the Space Pavilion, admiring all the interactive exhibits. (Ellie particularly liked the thermal imaging camera: "Look how good my fleece is at insulating me!" she said, as the camera could hardly detect her.)
As they experimented with the other machines, they noticed Mr Thornhill, their headmaster, also looking around. "Good," he said, approaching them. "You're still busy, I see, solving codes!", he said. "What are you doing here?" asked Ellie. "A bit of snooping, a bit of sneaking, always finding out things! You know what Headmasters are like!" he replied, as he walked off.
Mike and Ellie continued to explore. "Mike," Ellie hissed, "that guy there is the one who kidnapped me! What's he doing?" Mike and Ellie watched as the man went over towards one of the interactive exhibits. It appeared to be a machine with several brightly illuminated lights representing telescopes in a giant array. The man started to press the buttons, a complicated pattern of lights flashed up. As Ellie carefully noted down the sequence of lights, neither of the children noticed Mel standing behind them, doing exactly the same thing.
Note: if you are using Firefox you might experience the following problem, which is a currently unresolved bug in that browser: when you click the above link then the animation does indeed go back to the first frame, but then stays stuck at this first frame. If that happens, you can resolve this issue by first hitting the F5-key (or Command+R if you're on a Mac) on your keyboard and then clicking the link again.