TRAILS OF TREACHERY

NANCY AND BESS TRAVEL TO COSTA RICA WITH THEIR BEST FRIEND GEORGE AS SHE PREPARES TO PARTICIPATE IN LA RUTA DE LOS CONQUISTADORES, A 3-DAY MOUNTAIN BIKE RACE. IT SOON BECOMES CLEAR THAT SOMEONE WILL GO TO GREAT LENGTHS TO MAKE SURE TOP CYCLIST DEREK WOODHALL DOESN'T WIN. LEAVE IT TO NANCY DREW TO BE ON THE CASE NO MATTER WHERE SHE IS...