Question: Legend, which starred Colin Morgan, was directed by who?

Context paragraphs:
Merlin (series 2): The second series of "Merlin", is a British fantasy television series which began on 19 September 2009 and ended on 14 December 2012.  Series two regular cast members include Colin Morgan, Bradley James, Katie McGrath, Angel Coulby, Anthony Head, Richard Wilson, and John Hurt as the voice of the Great Dragon.  Series two contains thirteen episodes and had 5.77 million viewers for the premiere with 6.64 million viewers for the series finale.  Series 2 was the first series to have a two-parter and the only series to have a two-parter mid-series.  BBC renewed the show for the third series which premiered on 11 September 2010.

Legend (2015 film): Legend is a 2015 French-British crime thriller film written and directed by Brian Helgeland.  It is adapted from John Pearson's book "The Profession of Violence: The Rise and Fall of the Kray Twins", which deals with the rise and fall of the Kray twins; the relationship that bound them together, and charts their gruesome career to their downfall and imprisonment for life in 1969.

Colin Morgan: Colin Morgan (born 1 January, 1986) is a British/Irish film, television, theatre and radio actor best known for playing the title character in the BBC fantasy series "Merlin", the lead in "The Living and the Dead", and main roles in "Humans" and "The Fall"; his stage role as Ariel in "The Tempest"; and film roles in "Testament of Youth", "Legend" and "".

Waiting for You (film): Waiting for You is a British mystery drama film written by Hugh Stoddart and Charles Garrad and directed by Charles Garrad.  It stars Colin Morgan and Fanny Ardant with Audrey Bastien and Abdelkrim Bahloul featured in supporting roles.

Merlin (series 3): The third series of "Merlin" began on 11 September 2010.  Series three regular cast members include Colin Morgan, Bradley James, Katie McGrath, Angel Coulby, Anthony Head, and Richard Wilson, as well as Emilia Fox joining the regular cast.  John Hurt took his previous role as the voice of the Great Dragon but was no longer one of the regular cast (though he continued to provide the opening narration for the series).  Series three consists of 13 episodes.  The series three premiere was watched by 6.49 million viewers.

List of Merlin episodes: "Merlin" is a British fantasy-adventure television programme created by Julian Jones, Jake Michie, Julian Murphy, and Johnny Capps, starring Colin Morgan in the title role.  It was broadcast on BBC One from 20 September 2008 to 24 December 2012.  The show is loosely based on the Arthurian legends of the young wizard Merlin and his relationship with King Arthur, but it differs from traditional versions.  The show was influenced by the US drama series "Smallville" about the early years of Superman, and was produced by independent production company Shine Limited.

The Happy Prince (2017 film): The Happy Prince is an upcoming British biographical drama film about Oscar Wilde, written and directed by Rupert Everett.  The film stars Everett, Colin Firth, Colin Morgan, Emily Watson, and Tom Wilkinson.

The Living and the Dead (TV series): The Living and the Dead is a British supernatural horror television miniseries created by Ashley Pharoah and Matthew Graham.  The plot revolves around Nathan Appleby (played by Colin Morgan) and his wife, Charlotte Appleby (played by Charlotte Spencer), whose farm is believed to be at the centre of numerous supernatural occurrences.

Merlin (series 1): The first series of "Merlin", a British fantasy television series, began on 20 September 2008 and ended on 13 December 2008.  Regular cast members for the first series include Colin Morgan, Bradley James, Katie McGrath, Angel Coulby, Anthony Head, Richard Wilson, and John Hurt as the voice of the Great Dragon.  The first series contained thirteen episodes, with 7.15 million tuning into the premier and 6.27 for the series finale.  It was the only series to be comprised completely of stand-alone episodes.  Before the series finale, the BBC confirmed that the series was renewed for a further 13 episode second series.  Series two premiered on 19 September 2009.

Merlin (2008 TV series): Merlin is a British fantasy-adventure drama television programme created by Julian Jones, Jake Michie, Julian Murphy, and Johnny Capps, starring Colin Morgan in the title role.  It was broadcast on BBC One from 20 September 2008 to 24 December 2012 for a total of 65 episodes.  The show is loosely based on the Arthurian legends of the young wizard Merlin and his relationship with King Arthur, but it differs from traditional versions.  The show was influenced by the US drama series "Smallville" about the early years of Superman, and was produced by independent production company Shine Limited.

Supporting paragraphs: Colin Morgan Legend (2015 film)
Answer: Brian Helgeland