my dearest friends, the end is upon us. If you are confident that you have unravelled the mysteries of Dr. X's treasure hunt, then just one further task remains before you. Fret yourself not though gentle reader, an arduous task this is not. All that remains is for you to send to us (via email or footman) the following: your name(s), contact details, and most importantly the answer to the treasure hunts final riddle.
Satisfied that you have the correct answer? Then without further delay, submit your answer to this address:
On behalf of Dr. X, may we take this opportunity to thank you for your involvement in this venture and to wish you the best of luck...