Technical aspects impressive, but witches hardly entrance: review

“Double, double, toil and trouble, fire burn and cauldron bubble . . .”Three pot-stirring witches, a ghost of a dead king, a duke descending into madness, a conjured-up demon — the gang’s all here for a Shakespearean spoof that opens The Sault Theatre Workshop’s 69th season.Wyrd Sisters pays weird and wacky homage to Shakespearean tragedies such as