There is one Assassin’s Creed Mirage Round City lost book that is one of the game’s trickier collectibles. It seems just out of reach no matter where you go. However, it is possible to get if you are patient. Here’s how to get the Palace of the Green Dome lost book in AC Mirage.
How to get the AC Mirage Palace of the Green Dome lost book
To get the AC Mirage Green Dome lost book, you will have to wait until you get to the mission titled “The Serpent’s Nest.” It is the final big assassination mission (but not the actual final mission). This will have you assassinating Qabiha, the head of The Order.
Unless there is some glitch (which is possible in some scenarios), there is no way to get into the Palace of the Green Dome early. Every door will be locked and the main way you get in — the hole on the rooftop — is blocked before this mission. In essence, do not even attempt to get this book until you are essentially almost done with the campaign.
Once you start that mission, you will be able to get the lost book inside of the Palace of the Green Dome (you can get it after beating that mission, too). Get in through the rooftop through the entrance on the southwestern side of the building. Dive down into the water. (You can get in the palace through other means if you have unlocked the doors during the mission, but this way is always open after “The Serpent’s Nest.”)
Go up the stairs one floor and you will get to the room with the book in it. However, it is barred. To unbar it, go through the open doorway just to the right the barred door. Break the lock on the door leading to the outside. Climb around the building to the beam in the above picture.
This will lead you to balcony with an open door. Go to the balcony and then inside the room. The book will be in the corner.
There is nothing special about this particular Round City lost book, but it is one of the books you will have to trade in at the book collector.
