He’s late. He calls to explain. “A mix-up,” he says, and then, “I read all your stories.” Pause. “You. Are. A. Grrreat. Writer.” Another pause. “What’s your name?” I tell him. He says, “Of course it is.” I ask what his name is. “MY NAME? I. Am. William. Shatner!” Well, yes, but which William Shatner? The child actor from Canada, descended from Eastern European rabbis? The 23-year-old Shakespearean whom Sir Tyrone Guthrie called the Stratford Shakespeare Festival’s most promising actor? The young actor who made his debut on Broadway two years later, in 1956, in “Tamburlaine the Great,” then appeared...