The Vatican is full of tiny mysteries for you to solve as you explore in Indiana Jones and the Great Circle, waiting for you to discover them. A smaller mystery you can learn about is A Snake in the Garden, where you’ll have to solve a bookshelf puzzle.

You can find this while exploring the Apostolic Palace on the southeast side of the map. Entering this location is restricted, but if you can find the Blackshirt Disguise shortly after meeting Gina the first time, it makes entering this location much easier. The puzzle for the bookshelf is challenging, but after working your way through some of the wordplay, the answer should become much easier for you to narrow down. We’re going to help you solve the A Snake in the Garden bookshelf puzzle and break down the exact code you need to use in .

The A Snake in the Garden mystery at the Vatican is in the Apostolic Palace, on the third floor. You can reach this location from the Belvedere Courtyard, or by coming from the south through the Excavation Site. If you were able to secure the Blackshirt Disguise before entering this area, it should be relatively easy to pass by the guards, as they won’t notice you. However, if you only have the Cleric outfit or Indiana Jones’ explorer one, they will be hostile if they catch you.