Knotty

They seek him here They seek him there But he can't be found Anywhere They seek him high They seek him low Someone saw one Long ago A knotty problem A mess to undo Will need an expert To see it through It's hard to find This particular skill Much in demand With costly bill Of what issue Do I speak? What could possibly Cause such pique? A good masseuse Would help us lots Gardening's left us Tied up in knots