'Agatha All Along' review: Merrily down the Witches' Road we go

'You've heard of people who leach all the colour out of the room? Well, I'm so bad, I even do it to myself.' Photos: Handout

During a perilous moment for herself and her hastily-assembled coven – one revolving around an enchanted rock ballad – everyone's (other) favourite witch Agatha Harkness (Kathryn Hahn) exhorts a comrade: "Stop phoning it in! Play like a witch!"

In truth, no one in the cast or creative team behind Marvel's new streaming series Agatha All Along can be accused of phoning it in.