So this "map" is Baltimore Harbor right?
The map shown is suppposed to be the location of the final treasure. If it is indeed that of Baltimore Harbour, then the teams go to Boston, London, Dover Castle, and Paris before they return to USofA and look for the final treasure around Ft. McHenry. Sort of doubt it. So map must be somewhere else.
TPTB certainly are giving us enough hints of which teams survive the longest in their previews: Browns in Boston, Geniuses in Paris. etc.
NBC must be getting desperate since they repeated a one-hour version Friday night, will do so again Saturday, and once again at 8 on Monday. And it does not get any better with each viewing!
But add all the small audiences together and NBC can shout out that over 12 million people have watched TH!