Action is triggered — the kind that sends Brown’s hunky, beloved Harvard symbology professor, Robert Langdon, chasing all over Spain on Kirsch’s trail, accompanied by the inevitable beautiful and brilliant woman. As one admirer says to Langdon, the full flap this generates “reminds me of the Vatican denouncing your book ‘Christianity and the Sacred Feminine,’ which, in the aftermath, promptly became a best seller.” No need to be so modest.