Doctor Who Series 12 - Yaz (MANDIP GILL), Ryan (TOSIN COLE), The Doctor (JODIE WHITTAKER), Graham (BRADLEY WALSH) in Spyfall - (C) BBC / BBC Studios - Photographer: Various

ANALYSIS: Overnight Viewing Figures for Spyfall Part One

The Thirteenth Doctor's return was seen by 4.88m people overnight The overnight ratings for the first episode Series 12 have now been released. And, fittingly...