Tower of the Four, Episode 5

Magic has brought Brom back from the dead.
After clawing his way out of the grave, he races back to the academy to save his friends...
...only to find he's been gone a year.
His friends survived, and they've been living as powerful Quadrons during his absence. Oriana rules in Keltovar. Royal leads the Fendiran armies. But Vale is missing...
...and so are The Four.
When the masters of the academy discover Brom is alive, they attack, bent on putting him back in the grave.
Meanwhile, in the heart of Keltovar, Oriana grasps at the threads of a mystery: a conspicuous amount of fours-the number of magic-has surfaced, and they all point to Brom's unearthed grave.
Can she find him before the masters finish their work? Why was Brom brought back to life in the first place?
And by whom?
You'll love this high fantasy because sometimes dead men do tell tales, and those tales can change the world.