A summer trip to her grandparents' house was going great until Jesse gets caught up in a mystery in the attic. When she encounters a pair of spooky green eyes during a lightning storm, Jesse sets out to use engineering skills to solve the Case of the Clicking Clock. Ten-year-old Jesse Steam's curiosity about how the world works leads her to one mystery after another as she pedals around town, often with Mr. Stubbs, her tabby cat, keeping her company in the bike basket. Using simple scientific tools and their powers of observation, Jesse and her friends analyze, test hypotheses, and conduct experiments. If the kids get stuck, they know they can count on Professor Peach, a retired college science educator, to step in with a clear explanation. Jesse STEAM Mysteries promote STEM and STEAM concepts for young children.