With a plot as intertwined as a Celtic knot, Golden Boughs & Poisoned Roots, seamlessly weaves the past into Laird Rex Arthur's present. Prompted by the fey to test Scotland's Celtic trees for curative properties, feisty Merle Lynn MacLaren, discovers they are being systematically poisoned. To expose the culprit, it is essential for Merle to spot patterns in ancient Grail lore combined with clues from her visions. Determined, Merle leads her granddaughter, Gwynn, and forestry grad student, Galahad, down a path strewn with withered trees, ancient spirituality and the all too occasional homicide. Can Merle restore harmony using only grit, wit and wisdom to unravel evidence that threatens not only those she loves, the sacred trees, but Camelon's very future?