She has also appeared on the HBO science fiction western series Westworld (2016–2018) and the FX biographical miniseries Pistol (2022).

As of October 2021[update], her father works as a screenwriter[citation needed] and has written episodes of Silent Witness and The Bill.

[6] Riley's television credits include episodes of Poirot (2003), Marple (2006), Doctor Who (2008's "Silence in the Library" and "Forest of the Dead").

Also in 2010, Love and Distrust was released direct-to-video, featuring five unique short films; the first of these was The Summer House, in which Riley was co-lead, opposite Robert Pattinson.

[13] Between 2009 and 2015, Riley developed an idea and story by her father into a screenplay, then ultimately directed (after being unable to hire another director to helm the project)[14] and starred in the resulting feature film Scottish Mussel.

[24] In a 60 Minutes interview in 2014, the couple stated that they had reconciled and were living together again, along with Musk's five children from his first marriage to Justine Wilson.