As repairs on the castle progress, murders begin occurring in the night. Warwick, and everyone else, are worried about traitors in their ranks. The Builder is encouraged to seek the
Mirror of Ra and does so. The mirror reveals that two
skeletons and one
hargonaut were among their ranks, and they are dispatched. Warwick urges the King to remain vigilant and implies that there may still be a human spy amongst their ranks as, allegedly, there were shadows spotted of men meeting with monsters. The Builder then gives the mirror to Anessa. Later, Warwick tells the builder it is ill-advised to question the townsfolk's loyalties, stating that "If there is a spy among us, we may have no choice but to wait for them to slip up..." Despite his suggestion, Warwick is quick to propose
Anessa as a suspect but tells the Builder not to say anything. As the Builder seeks out the weaknesses of the enemy monsters, Warwick occasionally helps in these endeavors. During their search for the last weakness, the monsters are in possession of the Mirror of Ra and dispel their disguises. It is unknown who gave away the mirror, but suspicion immediately falls on Anessa and Warwick uses this to his advantage.
At several different points throughout the Moonbrooke storyline, after the Builder goes to sleep, the player is shown text cutscenes about someone giving details away to a monster. The spy featured is heavily implied to be Warwick, based on several personality details like their fear of death. The monster is likely his master, a wrecktor.
Eventually, the suspicions of a spy cause tensions to mount in the castle. The King is then persuaded by one of his advisors to lock Malroth in the dungeon, though the King does not say which of his advisors suggested such. Warwick then tells the Builder in private that it was Anessa who suggested it, and that they will be able to free Malroth when they have relieved tensions. The King was persuaded to lock up Malroth due to his unstable personality and bloodlust.
The King, having declared it is time to end the war, has all the knights in the castle in charge of Rendarak, which he describes as a place akin to Hell. Anessa voices her concern about having the castle abandoned by all its soldiers, but Warwick counters her quickly, asking sarcastically if she wanted this war to end or not. The soldiers eventually arrive at a beautiful valley, to the army's confusion. They eventually progress to the end of the valley where they find what used to be Midenhall castle and enter it. They encounter only strange illusions of people and an empty throne room. Upon entering the throne room they are ambushed by monsters. Before the fighting begins, it is evident that something is wrong with Warwick, as he does not draw his sword when the monsters appear. When the traitor is prompted by the leader of the monsters - the wrecktor - to take their place by its side, he walks over to the head of the monster group. This catches everybody off guard, and he says he has fulfilled his side of the deal while taunting the rest of the Moonbrooke Brigade. The wrecktor is then satisfied with this and transforms Warwick into a silvapithecus. Warwick is then slain by the human army with the rest of the monsters.
Before he dies, Anessa runs to his side and desperately tries to talk to him. He calls the world a lie, and that everyone would die no matter who won the war. When she pursues this topic, he says that one day, he realised that the world was an illusion, and he tried to speak with the King but he refused to listen. The Wrector found him afterwards and took advantage of his fear of death, promising him eternal life in monsterhood if he could earn it, which was why he betrayed Moonbrooke in the first place.
Shortly after, Gerome thinks about the wrecktor's final words about how Moonbrooke had left the castle easy to attack and Anessa immediately tells the Builder that they should return to the castle without delay. She realises, upon return, that leaving the castle open to the monsters was a ploy from Warwick all along.
