I Know You Know by Gilly Macmillan HarperCollins | Amazon | B & N Paperback: 384 pages Publisher: William Morrow Paperbacks; Reprint edition (September 18, 2018) From New York Times bestselling author Gilly Macmillan comes this original, chilling and twisty mystery about two shocking murder cases twenty years apart, and the threads that bind them. … Continue reading "Book Review: I Know You Know by Gilly Macmillan"