There are different sides to every story. And the denizens of Hell have more than their fare share to tell. This collection of short stories is from different perspectives of characters in the Gravity series, taking place during the events of Book 1 and 3.
Inertia developed out of short sketches that I made during the writing of the Gravity series to know what the other characters were up to and what their motivations were. Since people often want more light shed on the story, I thought it would be interesting to develop them. We've been limited seeing through Ariel's eyes, and there are just some things she doesn't know about. I've been sort of considering this collection of chapters to be the deleted scenes of the books.
There are some spoilers for Uncertainty and Luminosity in Inertia, but I think it sheds the most light on the happenings in Gravity. If you've just read the books and are going, "Huh?" then read further for some answers. Not to mention spending more time with the characters. I hope you all find it an insightful and entertaining addition to the series.
Content Warning: Recommended for readers 14 and up. This novella contains strong language, drug use, sexuality, and violence. A little less clean than the other books in the series. Not everyone is an angel.