The Circle of Owls

Robin never returned to her group. Penelope is missing. Everyone is looking for the Grimalkin. Three different expeditions bring the truth of the Circle of Owls to light, and Thea discovers how deeply entwined her past is within it. While trying to piece together how she’s connected to the Circle, while trying to save her family, she must also protect her friends from those who are trying to destroy the world as they know it.