When an Algonquin Indian named George Longbow crashes a town party, he hands Mayor Booth a land grant that claims he and his people own the land that Cabot Cove was founded on. Suspecting that Mr. Longbow's claims are false, the town leaders turn to the local expert on Indian History for insight. However, when the professor confirms his claims, several business owners fear an impending development project will no longer be able to proceed as plan. At this point, when the leader of the project is found murdered with a spear in his chest, Jessica has to prove George is innocent in the crime.

When Amos's sister Winnie abruptly arrives in Cabot Cove with the news that she left her domineering husband, Amos, Seth, and Jessica have their hands full when they arrive in town looking to bring Winnie home. Things get tricky when Jessica hosts Amos, Winnie, and their in-laws for dinner one night and Winnie's husband ends up murdered. When it looks like Winnie is the prime suspect, Jessica has to figure out who the true culprit is.