'Shaw extensively develops an engaging argument for making substantial reforms to our criminal justice systems. Starting with the claim that we can all agree on – that for any proposed justification for criminal sanctions, there are reasons to doubt it – while acknowledging that there is widespread disagreement about which particular view is correct, Shaw explores what else we can agree on, and what implications this has for criminal justice systems. The argument's ecumenical nature means that theorists of all stripes can find much of interest, and much to grapple with, in this book.' Gabriel De Marco, University of Oxford