Jim Averbeck. A Hitch at the Fairmont (2014) 416 pp.
Publishers description: After the mysterious death of his mother, eleven-year-old Jack Fair is whisked away to San Franciscos swanky Fairmont Hotel by his wicked Aunt Edith. There, he seems doomed to a life of fetching chocolates for his aunt and her pet chinchilla. Until one night, when Aunt Edith disappears, and the only clue is a ransom note written...in chocolate? Suddenly, Jack finds himself all alone on a quest to discover who kidnapped Aunt Edith and what happened to his mother. Alone, that is, until he meets an unlikely accomplice—Alfred Hitchcock himself! The two embark on a madcap journey full of hidden doorways, secret societies, cryptic clues, sinister villains, and cinematic flair.
Setting: San Francisco (Fairmont Hotel; 1956)