When a resident of the quiet Arizona retirement community of Sunrise Acres is bludgeoned to death on the golf course, amateur sleuths Molly Levin and Mike Landry step in to investigate, using their local knowledge to aid Detective Jose Villegas in solving the murder. Motives for the crime abound: the victim's immigrant activism triggered hate-filled emails and threats. His involvement with a startup's revolutionary technology has attracted international intrigue. His handsome brother and likely heir is an obvious suspect, but Molly's friendship with him antagonizes both Mike and the police. As Molly and Mike uncover secrets and pursue clues, their unorthodox methods may identify the murderer, but also put them in danger.