Bestselling Welsh author Follett has made a career out of the WWII suspense thriller (Eye of the Needle; Jackdaws), and he hits the mark again with this dramatic and tragic tale of amateur spies pursued by Nazi collaborators in occupied Denmark in 1941. Harald Olufsen is an 18-year-old physics student who stumbles into espionage when he accidentally discovers a secret German radar installation on the island where he lives. The British do not know the Germans have radar and cannot understand why British nighttime bomber losses are so high. When Harald learns there is a fledgling Danish resistance group called the Nightwatchmen, he becomes involved through his older brother, Arne, a happy-go-lucky Danish army pilot. Harald photographs the secret radar site, but the spy group quickly unravels under the pressure of Danish police detective Peter Flemming, an officious, ruthless, and arrogant cop who hates the Olufsen family for a public humiliation his father suffered years before. The amateur spy network underestimates the police with tragic and deadly results, and soon Harald and his Jewish girlfriend, Karen, must plan a desperate aerial escape to get the photographs to England. Follett starts out fast and keeps up the pace, revealing how ordinary people who want to do the right thing are undone by their own enthusiasm and inexperience. He also paints a vivid and convincing picture of life in occupied Denmark, of easy collaboration with the Nazis and of the insidious, creeping persecution of the Jews. (Dec. 2) Forecast: Big sales are business as usual for Follett, and his latest offering (supported by television and print advertising) should be a strong performer. Audio rights have been sold to Audio Book Club and Books on Tape. Copyright 2002 Cahners Business Information. -- PUBLISHERS WEEKLY.