Two Royals On A Mission - A Riddle

Written by: Keith Bickerstaffe


They parachute nude into urban New Jersey,
two Brits on a mission to claim their nobility,
a Prince and his Princess, infantile, ill equipped, 
out to reconquer America, their rightful home.

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A synopsis of a novel written by a British author.
Have you heard of it? or better yet have you read it?

Hint: His initials are M.H.