Palmer described her character, Vanessa, as "the bitchy schoolgirl".Palmer relocated from Semaphore Beach in Adelaide to Los Angeles in May 2007 to further her career, and began auditioning for films.
The film was adapted from a novel that was the first of a six-part series.Palmer signed on to do three movies, if the film became a franchise.She has further appeared in films such as The Sorcerer's Apprentice, I Am Number Four, Take Me Home Tonight, Love and Honor, The Ever After (which she co-wrote and co-produced with her husband, Mark Webber), Kill Me Three Times, the 2015 remake of Point Break, Triple 9 and the Mel Gibson-directed war film Hacksaw Ridge.Palmer was born and raised in Adelaide, South Australia.George Miller was set to direct the film, but it was cancelled by Warner Bros.
due to script rewrite issues and the 2007–2008 Writers Guild of America strike.
Palmer won the romantic lead in Disney's The Sorcerer's Apprentice, produced by Jerry Bruckheimer and directed by Jon Turteltaub.
The film was based on the relevant section of the animated film Fantasia (1940), which was set to a short scherzo for orchestra by Paul Dukas, L'apprenti sorcier (The Sorcerer's Apprentice, published in 1897, and by far, the best known of Dukas' compositions), all of which were inspired by the eponymous poem by Johann Wolfgang von Goethe.
She played the love interest to Liam Hemsworth and Billy Bob Thornton's daughter in Cut Bank and an assassin in Kill Me Three Times opposite Simon Pegg, Alice Braga and Luke Hemsworth.
The latter film is set to be released in 10 April 2015.
In 2011, Palmer starred in the sci-fi adventure film, I Am Number Four, alongside Alex Pettyfer and Dianna Agron.