After war dog trainer and crossword puzzle enthusiast Pete Durante cracks a code that helps end World War II and saves millions of lives, he gets driven to suicide by a vengeful intelligence officer named Rip Greamer. To save his family from an even darker fate, Pete must follow his dog beyond the grave and into a purgatorial maze of tunnels beneath Los Angeles to solve one final puzzle. Under Angels is a ghost story based on fact mixed with urban legend, pulling readers through a labyrinth of storytelling that includes Los Angeles history, UFOs, the K-9 Command Unit, WWII cryptography, anagrams, love, tragedy, second chances, and Greamer, who is either a covert government agent or something far worse.