Cusack, C.M. 2017. Robert Crotty, Peter the Rock: What the Roman Papacy Was, and What It Might Become. Melbourne: Spectrum Publications, 2015, pp. xviii +181, ISBN: 978-0-86786097-9 (pbk). Journal for the Academic Study of Religion. 29, 3 (Apr. 2017), 319–320. DOI:https://doi.org/10.1558/jasr.29013.