EVENING IN BYZANTIUM
by IRWIN SHAW 368 pages. Delacorte. $7.95.
Irwin Shaw's recent characters seem to come in three possible shapes: flat, angular or round. They range from the looking" to "sharp-faced, the merely balding, "round, mahog insignificant-any-tanned [and] smiling." Somewhere in between, you will find Jesse Craig, the 48-year-old protagonist of Shaw's latest bestselling novel. Craig's last two films bombed for $8,000,000; his estranged wife has grown accustomed to his checkbook; his mistress may be getting bored with his body. So Craig does the only logical thing: he flees to the...