Knock Knock Trivia Quiz

Answer: David Suchet

David Suchet has been acting since 1970. He is probably best known as Agatha Christie's detective Hercule Poirot, playing him in 70 episodes of the ITV series "Poirot" from 1989 to 2013. Over the course of his career, Suchet has done a great deal of Shakespeare and historical drama work as well.

Tim Curry is probably best known as Doctor Frankenfurter from "The Rocky Horror Picture Show". Tim Piggott-Smith appeared on "Doctor Who" twice: in "The Claws of Axos" (1971) and "The Masque of Mandragora" (1976). Pigott-Smith died on April 7, 2017. Timothy Dalton was James Bond in the 1980s and played Lord President Rassilon in "The End of Time, Parts 1 and 2" (2009-2010).

All four actors were born in 1946.

Answer: Pavel

Pavel disappears almost at the start of "Knock Knock". He plays a record, which activates the evil bugs inside the house. There is a scream and ... cut to the credits.

Pavel was played by Bart Suavek. He has previously worked in the police procedural "New Blood" (2016) and the police comedy "No Offence" (2017).

Answer: Chinese

The Doctor thought he smelled Chinese food, and said "I love Chinese food." While this was the first time the Doctor expressed an interest in Chinese Food, other characters have eaten it during the modern era.

China was appeared repeatedly throughout the history of "Doctor Who" starting with the First Doctor visiting China in "Marco Polo" (1964). Both the Fourth and Eleventh Doctors displayed knowledge of Chinese. ("The Talons of Weng-Chiang" (1977), "The Angels Take Manhattan" (2012)).

Answer: dryads

The insect creatures were dryads. In Greek mythology, a dryad is a tree nymph or spirit, specifically of oak trees. The dryads appeared to be oversized coach roaches. They could rapidly swarm and consume an entire human in a matter of seconds. The dryads had completely infested the house and could suck people into the walls.

Nomads are humans who travel from place to place. Nereids are Greek water nymphs. Kodamas are the Japanese version of tree nymphs.

Answer: 20 years

The house appeared to need to feed every 20 years, as the Doctor found mementos of tenants from 1957, 1977, and 1997.

Answer: Eliza

Eliza was played by Mariah Gale, an Australian actress who has done a great deal of Shakespeare since 2000. Her performances include Juliet and Ophelia. Her television work includes working with David Tennant on the third season of "Broadchurch" (2017).

Ada (Rachel Stirling) was the blind girl hidden away in "The Crimson Horror" (2013). Rapunzel is a fairy tale of a young woman locked inside a castle. Erato was a Greek dryad, a priestess of the god Pan.

Answer: son and mother

Eliza turned out to be the mother of the Landlord, who saved her from a terminal illness using the bugs when he was a small boy. The Landlord has spent his entire life serving the insects to keep his mother alive.

In the end, the Doctor convinces Eliza it is time to end the cycle. She takes control of the insects and uses them to absorb her son and vanish.

Answer: Pavel, Paul, Felicity, Harry, Shireen

Pavel is attacked first, near the very start of the episode, when he plays some violin music. Paul is next, shortly after Bill tells him she is gay. Felicity is attacked by the trees when wanders outside of the mansion. Harry is eaten by dryads called up by the Landlord using a tuning fork. And Shireen is eaten by dryads while the Doctor is explaining what is going on inside the house.

Harry was played by Colin Ryan. He played Barry in the sci-fi comedy "Hounded" (2010) and Lorenzo de Medici in "Leonardo" (2011-12).

Paul was played by Ben Presley. He is probably best known for playing the jester in the comedy-adventure series "Galavant" (2015-16).

Shireen was played by Mandeep Dhillon. She has actually worked with Peter Capaldi before, in a 2012 episode of "The Thick of It". Dhillon has appeared on US television, in "24: Live Another Day" (2014). She can also be seen in the comedy series "Some Girls" (2012-14) and "Fried" (2014-15).

Felicity was played by Alice Hewkin. She has been working in British television since 2014, and appeared in "Game of Thrones" (2014) as a child of the forest. She made several appearances on the comedy series "Stella" (2015-16).

Answer: piano

The strains of "Fur Elise" by Beethoven can be heard playing from inside the vault. Nardole expresses surprise that the Doctor had given the occupant of the vault a piano. The Doctor tells the occupant of the vault that he has Mexican food and stories of students being eaten by bugs, and he is invited in to the strains of "Pop Goes the Weasel".

"Fur Elise" also known as Bagatelle Number 25 in A Minor, was written by Beethoven in 1810, but was not published until 1867, decades after his death. "Pop Goes the Weasel" is an old English folk tune whose first written versions date to the 1850s.

"Knock, Knock" was once again a Nardole-light episode, with the Doctor's assistant appearing only in the last few minutes. He is protecting the vault, a duty that he shares with the Doctor when he's not doing whatever it is Nardole does.

Answer: Mike Bartlett

Mike Bartlett wrote "Knock, Knock". His resume includes the 2012 mini-series "The Town" and several episodes of the Suranne Jones drama "Doctor Foster" (2015). Suranne, of course, played Idris/the TARDIS in "The Doctor's Wife" (2011). This is Barrett's first episode of "Doctor Who."

Bill Anderson directed "Knock, Knock" as well as "Thin Ice" for series ten. He has been working as a director in British television since 1996.

Steven Moffat has been the show-runner at "Doctor Who" since 2010. He does hold the record for writing the most episodes of "Doctor Who" but not this one. Moffat announced he would be leaving the show at the end of series ten.

Murray Gold is the musical composer for "Doctor Who", and has been with the show since the reboot in 2005.