The phrase "thrilling conclusion" means an exciting and satisfying ending to a story or event that keeps people engaged and eager to know what happens next. Full definition
Campbell's CG - heavy action boasts his usual lucidity and fleetness, even if too many set pieces race by without building to a satisfyingly thrilling conclusion. (nickschager.com)
Sci - Fi Author John C. Wright takes down a belligerent reviewer in style: The thrilling conclusion: An interviewer once asked me if my Christianity or my political philosophy would offend readers, by which he meant readers to the Left of Center. (firstthings.com)
The 2017 college football season reaches its thrilling conclusion at last, and as tradition, it's a bad time to hate the SEC. (sbnation.com)