Knock, Knock

Summary

When Jack unearths a clue that leads him to the Anchor-Ferrers’ home, our two narratives race forward on a nail-biting collision course.

Guest stars

• Anthony Webster as Ivan Penderecki
• Finnbar Hayman as Sergeant Cox
• Tim Treloar as The Walking Man
• Emily Adara as Sophie
• Gwïon Morris Jones as Hugo
• Karl Johnson as Colonel Frink
• Sian Reese-Williams as DI Maia Lincoln
• Zadeiah Campbell-Davies as Emily
• Frankie Keita as Ewan
• Oscar Coleman as Young Jack