"Mother Night" by Kurt Vonnegut is a probing tale (a parable perhaps) about the difference between appearances and reality.
"Mother Night" is actually one of three books I have recently read (or reread) that deal with the dichotomy between appearance and truth. "Mother Night" is clearly the least subtle book as far as advancing an argument...yet it is far and away the most powerful. Vonnegut navigates this ethical minefield in an entertaining, yet sobering manner.
"Mother Night" tells the story of an American playwright who is enlisted to be a spy within World War II Germany. The playwright becomes part of the upper crust of Nazi society. Working as a talk-radio personality, he encodes top secret information in his pro-Nazi broadcasts. In so doing, he helps to bring about the eventual victory of the Allies.
The war-time story-line of "Mother Night" is told in retrospect by the playwright who is living a secluded life in 1960's New York City. The reason he must live in hiding is that his Allied contact person during the war disappeared. He has no one left to testify to the fact that he worked for the Allies.
The story takes off in grand Vonnegutian style as the "protagonist" of the story is discovered simultaneously by Nazi-hunters, Soviet agents, white supremacists, and a woman claiming to be his ex wife.
Through it all, Vonnegut asks hard questions about what action, motivation, intent, and reality have to do with reality.
I found this book to be eye-opening. It is engagingly told; containing passages of great beauty, sorrow, and even humor. I recommend this book.