TITLE: The Severed Crown
GENRE: YA Fantasy
BLURB: 17 yo Vespen has been forced to remain in the palace and keep the king's crazy daughter company since he was born. Now betrothed to the girl, Vespen will do anything to break free of this royal leash. That's when he makes a pact with the king's mage. In exchange for a safe escape route out of the capital (using the mage's invisibility potion), Vespen will have to free the mage's son from the palace dungeons. But what the mage didn't tell Vespen is that his son's cell is poisoned, and that Vespen will need a cure to survive.
From the mage POV, he doesn't tell Vespen about the poison so Vespen will be forced to come back to him for the cure. No son, no cure. But from Vespen POV...why trust a man who is asking him to go against the king he's supposedly loyal to?
The mage is loyal to the king (or rather, scared of him) but the king is the one who sent his son in the dungeons. I'm looking for a good reason/blackmail that would explain why the mage is still working for the king (even though he doesn't know if his son is still alive).