The book begins with explaining who Manannán is, the meaning of his name, his appearance in mythology and his relationships. Then it continues with a long chapter about the god’s appearance in mythology (Lebor Gabala Erenn, Altram Tige Dá Medar, Serglige Con Culain, Tochmarc Etaine, Tochmarc Luaine, Echtra Bodach an Chóta Lachtna, Duanaire Finn, Imram Brian mac Ferbail, Echtra Airt meic Chuind, Echtra Airt meic Chuind, Compert Mongáin, Ceithearnach Caoilriabhach, Cóir Anmann and Sanas Cormaic). In the chapter about Manannán’s mythology outside of Ireland we learn that in Wales he was called Manawydan and appears in Mabinogi as a a skilled craftsman and trickster deity. In Manx stories we see his connections to magic and his role in the protection of the Isle of Man.

The fourth chapter is about items, animals, possessions, places and days associated with Manannán and their symbolism. The fifth chapter focuses on Manannán as a multifaceted deity. I loved when the author talked about his connection with the  Tuatha Dé Danann but how he is also separate from them. Daimler says ‘‘It is a reminder that Manannán is a  liminal being even among liminal beings.‘‘ There are historic or modern references to Manannán as a sea God, God of magic, God of the Sidhe, trickster God, psychopomp, God of weather, God of creation, warrior and advisor.

The sixth chapter describes Manannán mac Lir in the modern world, including modern folklore (and books inspired by the mythology but sometimes adding author’s own creativity) or pop culture (like when Manannán appears in an expansion book of Dungeons and Dragons as a deity that players can worship). There is also a part about the statue of Manannán in Limavady, Derry that was stolen, damaged and later replaced. A tale about people at their worst but also at their best. In the seventh and last chapter we learn about ways how to connect to Manannán mac Lir. Altars can change according to the different aspect as God of the sea, king of the Tuatha Dé Danann, god of magic or advisor. Included are offerings, a meditation, a midsummer ritual, an invocation and a prayer. I especially love the prayer to Manannán as a psychopomp intended for the dying and to comfort the living.