Beguiling Puzzle Adventure. Join the notorious World War I spy Mata Hari as she uncovers a secret German submarine base in Secret Missions: Mata Hari and the Kaiser`s Submarines. Search for clues, solve enigmatic puzzles, seduce men, and infiltrate top secret military operations, all in glamorous disguise. Can you ensure her mission succeeds? The Allied war effort depends on Mata Hari`s ability to extract secrets and stay undetected.