The only way to avoid the curse is to leave the theatre, walk around it three times, spit over your left shoulder and curse. Others believe that merely spinning around on the spot three times and spitting will suffice, while another way to undo the toil and trouble of the curse is by reciting lines from other Shakespeare plays.
It is usual, therefore, for theatrical folk to refer to ‘the Scottish play’, rather than name it. The most popular explanation is that Shakespeare used real spells revealed by real witches when writing the play.
The witches were so angry at having their secrets revealed, it is claimed, that they cursed the play and its name. However, there is little evidence for the superstition before the later 18th century, so its true origins are a mystery.
This article was first published in the May 2015 issue of History Revealed and answered by one of our Q&A experts, Rupert Matthews.