Greg Evans Associate Editor/Broadway CriticEXCLUSIVE: Bestselling horror novelist Paul Tremblay, whose A Head Full Of Ghosts is set for a film adaptation directed by Scott Cooper, has signed a three-book deal with the William Morrow imprint of HarperCollins.The publisher has acquired US and Canadian rights to three new books by the writer, the first of which will be The Pallbearer’s Club, set for publication in summer of 2022.The novel is described as a horror story about a less-than-successful