'The Marriage Book' is a comprehensive and wise guide written by a husband and wife team who developed The Marriage Course pioneered by Holy Trinity Brompton and now used widely throughout the UK. In 20 easily-digested chapters, leavened with humour and Charlie Mackesy's cartoons, the book ranges across all aspects of marriage from children to money, from in-laws to sex, from communication to tips on how to foster love, reinforce fidelity and enhance the relationship.