"Birdsong" is a historical novel that explores the horrors of World War I through the eyes of Stephen Wraysford, a young Englishman. The narrative alternates between Stephen's passionate love affair with a married woman in pre-war France and his experiences in the trenches of the Western Front. The novel also includes a subplot set in the 1970s, where Stephen's granddaughter tries to unravel the mystery of her grandfather's past. The book is a poignant exploration of love, war, and the endurance of the human spirit.

"The Razor's Edge" is a novel that explores the life of a young American, Larry Darrell, who rejects conventional society to search for spiritual enlightenment in the aftermath of World War I. His journey takes him from Illinois to Paris, and eventually to India. The story is narrated by an unnamed author who encounters Larry at various stages of his life, and through his eyes, we see Larry's transformation and the impact it has on the people around him. The novel is a profound exploration of self-discovery, spirituality, and the quest for meaning.