From the introduction: An adventure for 1 canine investigator & 1 DM ... Spud is a dog and a detective, looking to solve the mystery of his master’s murder. Awakened by powerful magic into a higher form of intelligence than that possessed by the common-or-garden pug, he nevertheless remains in need of assistance by someone who can reach high shelves and call him a good boy. The adventure begins with the detective stumbling across Spud, and it is assumed that Spud will accompany the character for the remainder of the adventure.