Double, double, toil and trouble... Tardis burn and Time Lord bubble.
These are the hags who go head-to-head-to head with The Doctor.
The curtain rises when he takes new assistant Martha for her first spin in the BARDis - to see William Shakespeare in 1599.
In perhaps the most visually spectacular episode of Doctor Who yet, the special effects team recreated a stunning replica of 16th-century London, including a model of the famous Globe Theatre.
But there's little time for The Doctor (Paisley-born David Tennant) and Martha (Freema Agyeman) to enjoy the view before the witches put them under a spell that could change history. But our heroes match their foes - Measure for Measure.
They are joined by Shameless star Dean Lennox Kelly as a Shakespeare he revealed was inspired by rockers Oasis.
Dean, 34, said: "The director told me, 'Think Liam Gallagher - except that you're actually a lyrical genius.' They wanted him to be a 16th-century rock star."
Source: www.dailyrecord.co.uk