Banquo is noble and loyal to King Duncan and, unlike Macbeth, does not contemplate acting on the Witches’ predictions. In Act 3, scene 1, however, he does seem to have ambitious thoughts.

David Tennant and Cush Jumbo deliver a 'Macbeth' for the ages, but the curse of Shakespeare's tragedy isn't easy to avoid.

In the end, the Weird Sisters get a hold of exactly what they came for: Brains — Macbeth’s, and maybe ours too.

Her first appearance is in Act 3, Scene 5 ... that Hecate acts as a higher authority over the witches, and she doesn’t want them meddling in Macbeth’s fate without her involvement.