In 1893, Otto "Big Red" Amlingmeyer and his brother Gustav, "Old Red" find themselves in a situation that they never expected. They have a bit of money and time to do something other than scramble. It's enough to confound even that most unconfoundable of men, their mutual inspiration, Sherlock Holmes. So Old Red decides that it's time for the for the two of them to head off to the Texas hill country, to San Marcos, and deal with the greatest tragedy...