THE HOUR OF TRUTH (336 pp.)David DavidsonRandom House ($3).
Not every civilian sent by the U.S. Government to remote World War II assignments came back the worse for life in backwoods or jungle. Take the hero of Author Davidson's novel, William Harmon. He is a successful lawyer, with a charming wife and two soundly precocious children; he seems to have everything he could reasonably want. He is intelligent, sensitive, attractive to women; he loves his wife. Yet suddenly there occurs what Mrs. Harmon calls, with deadly chivalry, "the trouble." Harmon's humiliation, handled with tact...