Related Clues:

• Agents' work is involved with open season
• Finding out secrets by clairvoyance — that's right out of prehistoric times
• Spies endlessly go off with an Egyptian to get their stuff
• Practice of spying
• One page is being rewritten in this secret work
• Intelligence - sixth sense right from prehistory
• Page one is about undercover work
• Undercover work carried out by sea pigeon, perhaps
• Spying on Sea Pigeon working out
• Agent's work?
• Secretly spotting migratory sea pigeon
• Pies baked on time in spooky work?
• Secret work
• ESP in later years keeps old in hush-hush work
• Bond's game