Extremely worth reading. Especially if you’re a fan of his other works since he weaves aspects of them into this series. But be aware, book 4 is the best of the series, and 5 is the worst (the climax is built up for the whole book and lasts about 2 pages.)

Edit: Also, regardless of anything you have heard or see online, the never made a movie of the series. They did release a bag of shit that they filmed, but no actual movie has ever made it to theaters…