Taylor Reed Marshall is an American Catholic apologist, writer, former academic, and online content producer known for his advocacy for traditionalist Catholicism. He is the author of multiple books including Infiltration: The Plot to Destroy the Church from Within, published in 2019. His youtube channel has nearly 300,000 subscribers.
Dr. Taylor Marshall’s book can be found here: https://www.sophiainstitute.com/products/item/infiltration