From the novel by Albert Maltz.
Adapted for television and produced by Robert Barr.
On an August night in 1942 British bombers flew high above a remote German village on their way to a distant target. At that moment, in a field a few miles from the village, an arrow of burning hay flared in the darkness. The blazing arrow did not burn long, but it pointed towards an underground factory and in its brief life involved the personal histories of a number of men and women.
The story covers the hours of 11 p.m. to 6 a.m. (The Investigation), and from 6 a.m. until 11 a.m. (The Vision of Jakob Frisch).