They've been stranded on Earth for 20 years, so Zygon commander Kritakh ... to be tempted by her innermost desires and then to face her greatest challenge. Can a violent heart really be tamed ...

‘I snogged a Zygon once…’ The Doctor is referring ... indicating something that will disguise a face… When Ingrid Oliver (Osgood) read the script for Death in Heaven she was ‘gutted ...

Doctor Who (2005–2022) Series 9, The Zygon Invasion Looking back on The Zygon Invasion The Zygons have been living in secret among us on Earth, unknown and unseen… until now!