Longer version...we'll have to consult Zero, The Ghost Detective!
Anyway, you know about the alleged curse of Macbeth, right? How you're not supposed to say the name "Macbeth" in a theater, or quote the play unless it's an actual rehearsal or performance, lest some terrible luck strike the production? Well, I think we've sussed out the reason...
Zero (he never got any more of a name than that) has a famous actor friend in town for a production of the Scottish Play...
Fortunately, Zero picks that moment to barge in...
Wait, just in case you're not hep to it, in play, Macbeth had assassins murder the noble Banquo, because it had been prophesied that Banquo's progeny would be kings. Banquo's ghost shows up later, haunting Macbeth and making him look raving mad...
Anyway, so Banquo's ghost apparently thinks that Macbeth is still alive some 900 years later? He's fooled by theatrical make-up? What a dumbass.
Still, if every time someone puts on a production of Macbeth, the ghost shows up, thinks it's real, and goes on a killing spree, well, that would explain an awful lot of the alleged curse on the play, wouldn't it?
Bevins want to quit...but Zero wants to convince the ghost that Macbeth is really dead...by making him watch the play!!
And you're convinced by a play? Do you understand the concept of fiction, or performance. ghost?!?! What a dumbass!!
But all's well that ends well!
From Feature Comics #70 (1943)