Murphy is skilled in dance, aerial acrobatics, modeling, acting, martial arts and various sports. She has performed stunts for such films as Spider-Man 3, Across the Universe, American Gangster, I Am Legend and M. Night Shyamalan's The Happening. She was actress Uma Thurman's stunt double in the films My Super Ex-Girlfriend, The Life Before Her Eyes and The Accidental Husband. She also doubled Thurman for a Honda motorcycle commercial.