Book of Secrets Achievement

I just completed this game, which I enjoyed very much. In the Strategy Guide, it mentions an achievement called Book of Secrets and says you have to "find the diary in the main menu". Does this mean on the screen at the start, with the guideposts marked "Play", etc? Where is this diary?

Yes! You need to look out for a tiny firefly and click on it and then wait for another and so on. I can't remember how many you have to click, maybe about 7, then you have the diary book.

There are 6 fireflies to click on.

Thanks to you both. I'd have answered sooner but couldn't access the forums the last couple of days. I didn't realise I had to look at the main menu screen after I finished the main game. Once I woke up to that, finding the fireflies was easy. Loved the game, and tha bonus game really finished it off beautifully.

Great I loved this game too, my favourite by a long way