Career
Her writing and directing film credits include Pure and Hotell. Langseth began her career as a playwright and theatre director In 2004 she directed Noomi Rapace in the play Beloved which she had also written.
In 2006 she directed the short film Godkänd.
In 2009 she directed her debut film Pure, an adaptation of one of her plays starring Alicia Vikander. Langseth"s 2013 film Hotell debuted at the 2013 Toronto International Film Festival.
The film reunited her with Alicia Vikander.