Is there a nefarious scheme aimed at eliminating vampires, particularly targeting Jovani Nightingale?

Is Justin, a member of the Samsa pack, involved in this conspiracy, or is it Sasha, who desires to possess Jovani, willing to kill him to ensure that Hannah can never have him?

This urgency underscores the necessity for Jovani to mate with Hannah, ensuring the birth of an offspring capable of walking in daylight before his impending demise. Jovani articulates to Hannah the importance of vampires, asserting that if they can emerge into the light, they could eradicate both humans and vampires who perpetuate darkness by preying on the innocent. Will Hannah trust Jovani and choose to be with him, or will she opt for Justin Samsa of the werewolves? Does Jovani truly see himself as humanity's savior despite his transformation into a cold, immortal being? Furthermore, will he pursue Justin out of fear that he may claim Hannah as his mate?

When Jovani is stalking Justin, where is Justin's father Lycell, who is one of the feared leaders of the Samsa pack. Will Lycell wait until Jovani kills his last born, or will he intervene and take on Jovani Nightingale?