Sean Patrick Flanery confirms that production on The Boondock Saints 3 will begin this coming spring. The original Boondock Saints followed Flanery and Norman Reedus as twin Irish Catholic vigilantes who embark on a mission to rid Boston of its criminals. A sequel later followed, and a third movie was discussed for years after. The Boondock Saints 3 was officially announced in 2021, with both Flanery and Reedus returning. However, updates beyond that have been slow.