Outlander has been a hallmark of romance television since it premiered in 2014, and every season has been a worthy installment of the TV show. Based on Diana Gabaldon’s book series, Outlander‘s seasons draw inspiration from their corresponding books, providing a strong throughline for the story. Caitrona Balfe plays Claire Randall Fraser, and Sam Heughan plays Jamie Fraser, the central couple in the plot. As one of the best period romance TV shows ever made, Outlander consistently raises the bar for the genre thanks to Jamie and Claire’s relationship, which has been the driving force behind the show’s action.