Fisherman's Inn was a small public lodging located on an island in Lake Michigan.
Indiana Jones contacted Peter Petryk to talk with him about Malone and his gang. After the barkeeper, George, heard Indiana yelling in anger, he gave the archaeologist a free beer and told him that he shouldn't be so loud as a police officer was also present.
Malone later tried to capture Jones but failed. Indy also met Jane and Jill at the inn, who would later save him from Malone and his gang.