Harry Treadaway Movies and TV Shows: Full Filmography

If you only know Harry Treadaway as Dr. Victor Frankenstein in Penny Dreadful, his screen record runs well past that role, from a 2005 feature debut to a 2023 role in The Chemistry of Death, per Wikipedia filmography. This page sorts those credits year by year, separates confirmed roles from claims the sources disagree on, and flags other people named Harry who crowd the search results.

Penny Dreadful run: Filmweb filmography lists 2014–2016, role Dr. Victor Frankenstein · Mr. Mercedes run: 2017–2018, role Brady Hartsfield (Wikipedia) · The Crown appearance: 2019–2020, role Roddy Llewellyn (IMDb credits page) · Star Trek: Picard appearance: 2020, role Narek in season 1 (Sensacine filmography) · Listed film credits: The Lone Ranger, City of Ember, Fish Tank, Control, Gringo, Honeymoon, Cockneys vs Zombies, Lady Chatterley’s Lover (Metacritic movie list)

Quick snapshot

1Confirmed facts

Brothers of the Head, feature film debut in 2005 (Metacritic) (TV Insider profile)
Stephen Morris, drummer in Control (2007) (TV Insider profile)

2What’s unclear

Fish Tank role: Kyle in Fandango, while Wikipedia and TV Insider list Billy (Fandango film credits)
Debut year: 2005 in TV Insider, but 2004 in Baidu Baike (according to Baidu Baike entry)

3Timeline signal

Penny Dreadful, 2014–2016, listed with 27 episodes (Filmweb) (CompareTV actor page)
The Chemistry of Death, 2023, David Hunter (according to CompareTV actor page)

4What’s next

Prima Facie, listed as a forthcoming 2026 film rather than a release (according to Elcinema filmography)
No dated credit after 2023 appears in the sources reviewed, so current work stays open (Elcinema filmography)

Six dated credits, one pattern: each confirmed role traces to a named database, and the open questions cluster in the most recent years.

Credit (year)	Role or detail
Penny Dreadful (2014–2016)	Dr. Victor Frankenstein (TV Insider)
Mr. Mercedes (2017–2018)	Brady Hartsfield (Wikipedia)
The Crown (2019–2020)	Roddy Llewellyn, two episodes (IMDb)
Star Trek: Picard (2020)	Narek, season 1 (Sensacine)
The Chemistry of Death (2023)	David Hunter (according to CompareTV)
Brothers of the Head (2005)	Feature film debut (Metacritic)

What else has Harry Treadaway been in?

Television credits by year

2014–2016: Penny Dreadful, Dr. Victor Frankenstein in the main cast (Wikipedia)
2017–2018: Mr. Mercedes, Brady Hartsfield in seasons 1–2 (Wikipedia)
2019–2020: The Crown, Roddy Llewellyn across two episodes (IMDb)
2020: Star Trek: Picard, Narek in season 1 (Sensacine)
2021: Deceit, Keith Pedder (according to CompareTV)
2023: The Chemistry of Death, David Hunter in the main cast (Wikipedia)

Film credits

2007: Control, Stephen Morris (TV Insider)
2008: City of Ember (according to Plex person page)
2009: Fish Tank, a UK feature with a 2009 date (Fandango person page)
2010: Pelican Blood (according to Plex)
2012: Cockneys vs Zombies (according to Plex)
2013: The Lone Ranger (Metacritic)
2014: Honeymoon (Metacritic)
2018: Gringo (Metacritic)
Undated: Lady Chatterley’s Lover, listed in the search results with no year or role

Why this matters

Penny Dreadful is the longest television run in this record, with 27 episodes listed by Filmweb. That makes its role carry more weight than the raw film count suggests.

The implication: the dated roles lean on television, while the film list is longer, so a reader asking what he has done should check both lists rather than the breakout role alone.

Was Harry Treadaway in Game of Thrones?

What the available sources show

None of the sources reviewed lists a Game of Thrones credit for Harry Treadaway.
The phrase appears as a related search, which shows query interest but does not confirm a role.

How to check a credit

Check the full name against a credits page from a Tier 1 or Tier 2 source before citing it.
Confirm the year and the episode in the listing itself, not only in a search snippet.

The catch: a related search signals interest, not a credit, so the Game of Thrones claim stays unverified until a credits database lists an episode.

Who plays Roddy in The Crown?

Role and year

Harry Treadaway played Roddy Llewellyn in The Crown, listed for 2019–2020 across two episodes (IMDb).
The character carries the name of Roddy Llewellyn, a real person (IMDb).

Character context

The credit covers two episodes, not a recurring series run.
Treat the role as a guest credit, not a series regular.

What this means: a two-episode guest role still counts as a named credit, but it should not be cited as a long-running part.

Are Harry and Luke Treadaway identical twins?

The twin relationship

TV Insider says Harry and his twin brother Luke wrote and performed the songs for Brothers of the Head (TV Insider).
Alchetron says Luke played Barry Howe in Brothers of the Head (according to Alchetron biography).

What is not confirmed

The sources reviewed do not state whether the twins are identical.
Identical-twin status stays open until a Tier 1 or Tier 2 source confirms it.

The trade-off: the twin link is documented, but identical status is a separate claim that needs its own source.

What is Harry Treadaway doing now?

Most recent dated credit

The Chemistry of Death (2023) is the newest confirmed credit, with David Hunter in the main cast (Wikipedia).
Star Trek: Picard (2020) is not the latest dated credit in the research, despite the brief’s framing.

Limits of available data

The sources reviewed do not confirm any project released after 2023.
Prima Facie appears only as a 2026 listing, not a release (according to Elcinema).

Why this matters: the 2023 credit is the newest confirmed date, so any claim about current work needs a source dated after it.

Timeline of dated credits

2005: Brothers of the Head, feature film debut (Metacritic)
2007: Control, Stephen Morris (TV Insider)
2014–2016: Penny Dreadful, 27 episodes (Filmweb)
2017–2018: Mr. Mercedes, Brady Hartsfield (Wikipedia)
2019–2020: The Crown, Roddy Llewellyn (IMDb)
2020: Star Trek: Picard, Narek (Sensacine)
2021: Deceit, Keith Pedder (according to CompareTV)
2023: The Chemistry of Death, David Hunter (Wikipedia)

The pattern: the film list runs from 2005 to 2018, and the dated television roles begin in 2014, so the career moves from film toward television over the same decade.

Confirmed credits versus unverified claims

Confirmed

Brothers of the Head, feature film debut, 2005 (Metacritic)
Control, Stephen Morris, 2007 (TV Insider)
Penny Dreadful, Dr. Victor Frankenstein, 2014–2016 (TV Insider)
Mr. Mercedes, Brady Hartsfield, 2017–2018 (Wikipedia)
The Chemistry of Death, David Hunter, 2023 (Wikipedia)

Unverified

Game of Thrones credit: not found in the sources reviewed
Identical-twin status: not stated in the sources reviewed
Prima Facie (2026): listed as forthcoming (according to Elcinema)
Fish Tank character: Billy or Kyle, with sources in conflict (Fandango)

The catch

The Fish Tank role shows the problem clearly: Fandango lists Kyle, while other sources list Billy. Citing either name without the conflict would mislead readers about the character.

What this means: a credit with a year, a role and a named database listing can be cited as fact, while everything else needs a flag.

What the sources say

For the film, which marked Harry’s feature film debut, both brothers wrote and performed all of those songs featured in the picture.

TV Insider (editorial)

Penny Dreadful (2014–2016), Victor Frankenstein, main cast.

Wikipedia (filmography table)

Why this matters: the TV Insider line credits both twins with the songs but says nothing about identical status, so the twin question stays open.

Where the record stands

The record on Harry Treadaway is solid for a core set of roles and thin everywhere else. Penny Dreadful, Mr. Mercedes and Control carry named roles and dates across sources, while the Game of Thrones question, the twin status and any work after 2023 remain open. A reader who shares a credit without checking it against a named listing risks repeating an error, so verify the year and role first or cite the claim as unverified.

Additional sources

tv.apple.com, castradar.uk, imdb.com

Frequently asked questions

Which Harry Treadaway films are the best known?

Control (2007) and Fish Tank (2009) are the two film titles that recur across the sources reviewed. Fandango lists Fish Tank with a 2009 date.

Did Harry Treadaway appear in Star Trek: Picard?

Yes. Sensacine lists him as Narek in season 1, dated 2020.

What role did Harry Treadaway play in Mr. Mercedes?

He played Brady Hartsfield in seasons 1–2, dated 2017–2018 in Wikipedia’s table.

How many film credits are listed for Harry Treadaway?

Metacritic’s movie list names nine films from 2005 to 2018. Plex adds Pelican Blood (2010), and the search results add Lady Chatterley’s Lover with no year, so check the date range before quoting a total.

Did Harry Treadaway appear in Lady Chatterley’s Lover?

The search results list it among his film credits, but none of the sources reviewed gives a year or character. Treat it as listed rather than confirmed until a credits database shows the role.