How to play 50 Clues

About 50 Clues: The Pendulum of the Dead, from BoardGameGeek:

Maria is locked up in a psychiatric ward and must escape finding her son before it's too late. The Pendulum of the Dead is the first 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.