I would say the Harry Potter series.
It's very fantasy, there are werewolves, wizards, and unicorns (And more!).
Also it is mysterious.
They (Hermione, Ron and Harry) try to solve mysteries,
It's a bit teen/child since it has some inappropriate scenes.
I don't think it is very dramatic, but I think for what you wrote you would totally enjoy the series.
Believe me, it's seriously good!
Or maybe the twilight series.
Its has vampires and werewolves,
It is VERY teen-ish book so I would not let my brother read it.
I hope this was helpful!
Not to beg or anything, if you think, please vote as best answer!
Thanks!
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