S3, E6: When the Legends track down an anachronism in 1930s Hollywood they discover it's none other than a time-displaced Helen of Troy -- and she's just started a war between two film studios. As the Legends try to fix history and return Helen (guest star BAR PALY) to the Bronze Age, things get complicated when they are blindsided by the appearance of a former enemy. Sara contemplates an offer she is made which would make the Legends leave the anachronisms be. Meanwhile Stein and Jax find themselves in an unusual predicament.