In "Twilight at Mac's Place," the quiet death of an aged spy triggers a desperate race to control his memoirs, which threaten to reveal Cold War secrets many would prefer stayed secrets. When the spy's estranged son receives the then dizzying sum of $100,000 for all rights to the work, he is properly dizzied. He is also smart enough to seek the help of veteran Cold Warriors McCorkle and Padillo, owners of a D.C. bar called Mac's Place that is both...