The stories came from romantic costume novels like those written by Alexandre Dumas, père and Rafael Sabatini. Last but not least, thrilling music was an important part of the movie formula. There were three great cycles of swashbuckler films: the Douglas Fairbanks period of 1920-1929, the Errol Flynn period of 1935-1941, and a period in the 1950s that included movies such as "Ivanhoe". The British television series "The Adventures of Robin Hood" made the genre even more popular. The genre has been revived in the "Pirates of the Caribbean" series of movies.