**Arclight is a series **
Even some of the people who have read it don't know that, because book 1 is self-contained, but it's true. It's not the kind of series where there's a cliffhanger for every installment, leading to the next, but there will be more from the same universe and same characters.
Book 2 is already in my editor's hands and awaiting line edits. I can't tell you much about it, other than it picks up a few months after book 1, is still told by Marina, and will take the characters to a place they never thought they'd go, in order to find someone they never thought they'd see.
Cryptic writer is cryptic. :-P