As Ho Chi Minh's brutal persecution tightens its grip on North Vietnam, and the top-secret "McNamara Wall" of electronic sensors is being installed to stop the flow of men and material down the Ho Chi Minh Trail into South Vietnam, two strangers find their worlds colliding.Mai Tanh is a lovely, intelligent North Vietnamese girl who takes a menial job as a maid in the American Air Base Officers Quarters after her family flees Hanoi. Roger Malcolm is an American civilian scientist-engineer overseeing the installation of the "Wall." She was warned away from the handsome, mysterious American. He was intent on his vital job, not looking for love. And when their passion ignites, it sparks a series of events that will put their love and their lives in grave danger in this mesmerizing, wartime drama. The high-tech "Wall", the battle for Khe Sanh, the Viet Cong uprising at Tet, and finally an all-out air attack on the Ho Chi Minh Trail form the backdrop for the novel and are vividly described.