All I can say is you must find a cave with a closed door (Laiken's Study, if I remember exactly)... This cave is somewhere on Sentinel Island nearby the place you can find "Allan" or "Catherine" ...

But I can't remeber if the door to the cave is open ... maybe you need a password?

Success wink

On 7th of february 2015 : I start a new adventure in the Divinity world of Original Sin,
it's a Fantastic Freaking Fabulous Funny ... it's my All Time Favorite One !