The Albrecht Society in Bloomington, MN

It all starts with an ominous warning from a man with a mysterious tattoo: Beware the Albrecht Society.
What follows is a code-cracking mission of epic proportions. Haunted by the old man's warning, Ernie Goodman and Bobby Donatelli track down members of the Revolutionary-era society to figure out its purpose and uncover its secrets. Their adventure takes them to the most unlikely of places—from secret tunnels located underneath the city to a private residence at a local nursing home—but the veteran treasure hunters maintain their determination and their sense of humor to ultimately uncover a jaw-dropping city secret.