50 Clues: The Fate of Leopold

From BoardGameGeek:

Maria has gathered enough strength to confront Leopold, but first, she must track him down. The Fate of Leopold is the third episode of the murderous trilogy about Maria. 50 Clues is an immersive puzzle game that offers the experience of an escape room, but in a format that can be played at home. You combine objects, solve puzzles and decipher codes to complete the story. A smartphone or tablet keeps track of the solutions and provides multistep hints if the need arises. A "How to Play" video is available here: 50 Clues: The Pendulum of the Dead