Locked Book - Help Please

Hi Everyone,

In the extras there is a locked book. In order to open it you have to buy 3 puzzles and to solve them. I bought them and managed to solve the first and the third but I couldn't do the second (the middle one)

Has anyone managed to solve this one!!! and if you did can you please tell me how.

I hate to leave things unfinished .... I want to know what is inside this locked book.

Thanks

I just completed this game and all the Extras, but there is no locked book. Perhaps that is in a different Dark Canvas game?