Outlander star Caitriona Balfe struggled with one of the iconic lines from the original novel series, according to her co-star Tobias Menzies. The line in question is Claire Fraser's catchphrase, "Jesus H Roosevelt Christ," which she frequently uses in moments of frustration. Balfe reportedly had difficulty making the line work for her, but the show ultimately chose to include it despite her struggles. Menzies revealed that adapting lines from the book to screen can be challenging, as sometimes the direct speeches in the novel can be "quite bumpy.

" However, he also mentioned that the cast has some influence over the script, with an open-door policy between the actors and the writers. The show, based on a series of books by Diana Gabaldon, has gained a global audience since its premiere in 2014, but had a dedicated fanbase long before the TV adaptation. Gabaldon, who published the first Outlander novel in 1991, is currently working on the tenth book in the series. Outlander is available to watch on Starz.