The Toll Road Between the Stars

Sabrina and her crew are nearly through the Stillwater Nebula. But before they pass through into the open space beyond, they have to get through the Perry Strait. A stretch of space where no FTL is possible, with the Perry System at its center.

There they learn that an old enemy has leapfrogged them and laid a trap. A trap they're going to have to spring if they want to get through to the other side.