Switzerland, June 1900. Watson and the Countess make a pilgrimage to the Reichenbach Falls - the place where Sherlock plunged to his so-called death in 1891. To their delight the Englischer Hof Hotel is hosting a hot air balloon festival and they are soon caught up in the joie de vivre of the Montgolfier enthusiasts.Perilous accidents soon become the order of the day as balloons start falling out of the sky and tourists start slipping off the narrow pathway into the treacherous waterfall.With Dr Watson entering into a love affair with another guest at the hotel, the Countess fears this case will be their 'final problem' in more ways than one.
