BLACK KNIGHT IN RED SQUARE by Stuart Kaminsky: Four dead, poisoned during the Moscow Film Festival. Chief Inspector Porifry Rostnikov must stop the female terrorist who seems determined and capable of making the Russian police look as stupid and vulnerable as those of five other countries in which she has worked. Written in 1984, Rostnikov is quite different from the brooding Arkady Renko of Martin Cruz Smith. More like a John Rebus in Russia.