Librarian Minnie Hamilton and her rescue cat, Eddie, are ready to pin down a bank robber in the newest installment of the delightful Bookmobile Cat mystery series. Late March is prime reading weather in the small northern Michigan town of Chilson. Though snowfall and cloudy skies deter outdoor activities, life inside the bookmobile is warm and cheerful. As Minnie and Eddie make the rounds to deliver comforting reads, Minnie witnesses bookmobile patron Ryan Anderson speeding away. When Minnie discovers the police want to bring him in for questioning about a bank robbery and the murder of a security guard, she realizes she's one of the only people who thinks Ryan isn't morally bankrupt. When an additional murder victim is discovered, the police immediately suspect her patron, but Minnie isn't convinced. And when she encounters Ryan hiding from the police, she decides to help him by investigating the crimes. But with multiple crimes comes the potential for multiple criminals, so Minnie and Eddie will have to fight tooth and claw to prove his innocence.