In 2012, Jerins was added to the cast of the zombie apocalypse film World War Z, directed by Marc Forster, to play the role of Constance Lane, the younger daughter of Gerry (Brad Pitt) and Karen Lane (Mireille Enos). The film was released on June 21, 2013. She then appeared in The Conjuring, a supernatural horror film directed by James Wan, which was released on July 19, 2013. Jerins played Judy Warren, the daughter of Ed and Lorraine Warren (Patrick Wilson and Vera Farmiga).