Following on from We Are Celtic Supporters, Richard Purden tackles a variety of subjects in his second book Faithful Through and Through.
Here he takes a fresh look at the people who have added to the wider culture, reputation and traditions on and off the park which have strengthened Celtic's position as a much valued institution.
Purden talks to a selection of supporters, ex-players, managers and public figures, while travelling to a number of historical locations.
While visiting the club's ancestral home in Ireland he discusses Celtic in the context of faith, politics and identity.
The author channels the voices of secret millionaires, Irish troubadours, Scottish politicians and the club's most popular icons who take you on a Celtic odyssey in a continuing story that underlines why this team from Glasgow's East End personify a way of life that represents unwavering hope and positive life-affirming values around the world.