Halston Sage (born May 10, 1993) is an American actress. She is known for her television roles, such as Grace on the Nickelodeon series How to Rock (2012), Amber on the NBC series Crisis (2014), Alara Kitan on the Fox series The Orville (2017–2019), and Ainsley Whitly on the Fox television series Prodigal Son (2019–2021). Sage has also appeared in films, playing Lacey in Paper Towns and Kendall in Scouts Guide to the Zombie Apocalypse, both from 2015, and Lindsay in the 2017 film Before I Fall.