Zeppelins Westwards

3rd of 8 short stories collected in The Trail Of Death.
This tale describes how the activities in the first adventure in the collection had attracted the attention of the British Secret Service. Their request that he transfer to work for them is happily accepted by the Flying Beetle with the condition he still be allowed to fly. His final mission before accepting the transfer deals with a forced landing in Germany and an exception stowaway on a Zeppelin.