Doctor Who: 10 Best NuWho Performances From Guest Stars

10. David Suchet As The Landlord - Knock Knock (Series 10, Episode 4)

Knock Knock sees companion Bill Potts and her university friends rent a creepy old house to live in for a cheap price, but it is soon revealed that there are disturbing implications behind the Landlord’s offer.

This enigmatic figure, played with a sinister, captivating quality by David Suchet, has spent years luring various students to his affordable accommodation, so the insect Dryads inhabiting the house can consume them.

This episode features some horrifying fates for the poor, unassuming students and also has a terrific twist where it is revealed the Landlord has been committing these murders to save his terminally ill mother, Eliza.

Suchet delivers on two differing personalities as a seemingly evil schemer, to that of a frightened young child, who is fiercely protective of his mother. His performance is both disturbing and oddly touching by the time we reach the climax and the unusual childlike aspect of his character makes this performance a memorable one, earning Suchet a spot on this list.