Box 500 Mystery Cache

Your mission is to locate a secret dead drop located in the heart of London. The drop location is frequently monitored so patience and stealth are of utmost importance to avoid detection by enemy agents.

Two foreign reconnaissance aircraft have been intercepted over London.

The pilots were captured alive but during routine interrogation, both suffered injuries incompatible with life.

We were able to ascertain from one of the pilots that the aircraft black boxes contain entry codes that will allow us to access a secure computer system. We believe this will give us the location of a dead drop somewhere in central London.

This dead drop contains vital information including a list of active enemy agents.

We need you to analyse the cockpit voice recorders and flight data recorders, obtain the entry codes and determine the exact location of the dead drop.