"Death of the Inhumans" was announced on March 28, 2018, as a project by Donny Cates and Ariel Olivetti scheduled to be released starting in July 2018 as a five-issue miniseries.
[1][2] The premise deals with the Kree plotting to get the Inhumans to join them by using a Super-Inhuman they created to kill some of them to serve as a warning to those who don't take up their offer.
However, the meeting goes far from as planned, as an Inhuman executioner named Vox, a Super-Inhuman created by the Kree, begins his bloody rampage across the place.
When Black Bolt, Medusa, Gorgon, Karnak, Crystal, Triton, and Lockjaw reach the meeting place, they discover the bodies of Oola Udonta, Aladi Ko Eke, Onomi Whitemane, and Goddess Ovoe, with the same three words written in their blood on a banner hanging about their corpses.
Unbeknownst to them, Vox and his men had already arrived on New Arctilan and began murdering every Inhuman they come across, old or new like Flagman, Glass Girl, Naja, and Sterilon.
As Black Bolt arrives, he walks through the halls of the Kree base speaking every name of the fallen Inhumans, making it a song about death.
Elsewhere, Medusa and the surviving Inhuman Royal Family members try to recruit Beta Ray Bill in their fight against Vox and the Kree.
[5] The Inhuman Royal Family are finally taking the battle to the Kree and arrive just in time to save Black Bolt from Vox.
Instead, it is a programmed and it is also revealed that the voice power everyone assumes is vaporizing his targets was actually just teleporting them instead as it was seen after Crystal’s apparent death, she has been transported to an unknown place where Kree scientists are experimenting on the Inhuman victims who were supposedly killed.
Meeting up with the Inhuman Royal Family and Beta Ray Bill, Black Bolt is told by Karnak of Vox being a programming that transported his "victims" to the Kree.
As Gorgon and Beta Ray Bill engage the Kree soldiers, Black Bolt, Medusa, and Karnak arrive at the laboratory where they find Vox-controlled Inhumans like Crystal and Lockjaw.
Knowing the truth about the prophecy, Black Bolt brings ruin to the Kree and unleashes his scream on the Vox-controlled Inhumans, killing them all.