Merlin found himself looking at the stars far above the astronomy tower. He came up here to distance himself from te rest of Hogworts. He was carrying a book on advanced potions, Moste Potente Potions. A copy could've been found in the resistricted section of the library. This particular copy however was a family heirloom. In spite of his rather rebellous nature and location of the place he reading Merlin had a pure scholarly interest in the book. But by his own addmition however, anyone would be suspicoius if he were found reading it, esepcilly in an off-limits location.