Got all the caches found and solved the mystery. Along the way we met several other cachers working their way through the series. As we pulled in and parked to search for the final we met another couple of cachers, froggerz. They stated they had been looking for a hour without any luck. We compared final coordinates and sure enough we both had the same set. As we set out to look, something was said that made me recall that there was one final step in this mystery. Froggerz were able to pull up the description and we recalculated the final coordinates. Froggerz with the find and we signed as well. Enjoyed the series and puzzles. Figured we'd check out the alternate ending as well. TFTC.