John Sandford has written the second book in his new Letty Davenport series. Letty works for a US senator in D.C. and is a crack shot. She is approached by the NSA and Homeland Security to go undercover to infiltrate a hacker group who has used ransomware to make millions. Her shooting skills will come in handy to defend herself and her partner, Rod Baxter. This is a timely story, as it concerns the war in Ukraine as well. It moves along fluidly, despite the introduction of many other characters and contains has welcome pockets of humor. I intend to go back and read the first title. Highly recommended!