The safety of the countless people depends on lighthouses. These sentinels from California to British Columbia are pictured and discussed historically in great detail by author Jim Gibbs. Dramatic vintage and colour photos of stark coastal landscapes and many unavoidable shipwrecks are presented as part of the lighthouse story where human courage links all events. The lighthouse keepers are portrayed heroically while their jobs are gradually being phased out; this is the twilight of lighthouses' use for navigation.