This chapter offers an insider’s perspective on the often-undisclosed peer-review process, shedding light on aspects that writers might not be familiar with when submitting their work to the publisher. Utilising the assessment criteria adopted by reputable publishers, the chapter enlightens writers about the specific focus areas that peer reviewers scrutinise in a proposal. Peer reviewers, who are experts in their respective fields, conduct a rigorous evaluation of both the proposal and the typescript. They assess dimensions including the project’s novelty, scholarly organisation and structure, target readership, and market potential. Only after a thorough examination of these elements do publishers, informed by the reports of peer reviewers, decide on the submission. This chapter demystifies the peer-review process and offers insider perspectives.