The ultimate price of Life is Death.
Can you refuse when that bill comes due?

Moriah, Triillian, Rabid, Grimmer, and Suri McKinnah are people with horrifying pasts. They are violent beyond imagining. But their choices were curtailed by the Unity. The violence, however, isn't the only thing they have in common.

Taking Unity Fleets, and bringing the Unity to Regia and their conscripts to Saloh is getting routine for Castor, his Greys, and Gianna, an ex-Unity Lord. But while the invisible threads of the different agendas tighten ... as their separate pasts catch up to each of them ... those threads cause an upheaval of command in Grey Fleet that could lead to the complete destruction of both the Resistance and Regia.

When the Grigori ... the Delphine ... time walkers ... get involved, will they just watch as things unfold? Or will they make a direct intervention? ...which would be in direct opposition to everything their hundreds of millennia-long observations and experience has taught each of them.

Haunter Grey Evolution (Outliers, Discordance, and Escalation) follows Upheaval (Origin, and Journey) in the epic and gripping tale of Castor, the Greys, and the Resistance.
Evolution also includes artwork in addition to that in the individual books.

HGevolution has six 5-Star reviews from Readers' Favorite for Outliers, six 5-Star reviews from Readers' Favorite for Discordance, six 5-Star reviews from Readers' Favorite for Escalation. That's eighteen for the three books Evolution includes.
Readers' Favorite puts on the biggest Independent Author competitions in the world. They don't exactly have to give out five star reviews.