Although I have not been to the place I will recommend it as the best Catholic bookshop in Onitsha Archdiocese

Swiftly built and summarily equipped to meet the ever increasing reading demands of the Metropolitan community. This Book Centre covers a wide range of audio visual media, including sacramentals of different sizes, needs and designs. Iconic in structure and rich in content as it stands adjacent to the ijeleic Basilica of the Most Holy Trinity from where it derives its name. Here, books of variegated fields of study can be procured ranging from theological, philosophical, health and diet, psychology et cetera. A visit will simply convince you.