Spy Catcher

the object of Spy Catcher is to identify and catch the "Mole" in MI7 (whose premises are known as "The Zoo"). This person, last night sometime, removed the plans of the "Sonic Macrothrodule" from the chief's safe and is preparing to leak them to a hostile power (Ruritania). The chief, Sir Arthur Cayley, in co-operation with Superintendent Hardy of Special Branch, leaves us to explore the Zoo to see what evidence we can find. Because everyone else is under suspicion, nobody knows that the player is about, and there will be trouble if we run into the security guard, or any personnel who happen to be working late.