Diving into the Wreck is the first book in a new series about, well, wreck divers. Boss (that's her on the cover, I assume) is the professional wreck diver, which means that she gathers crews to salvage wrecked and long-abandoned spaceships. When she discovers a wreck far from where it should be, from a time when faster-than-light travel was impossible, she knows she has an unusual find. Little does she know. The crew she puts together finds out that the ship possesses stealth technology far beyond anything known to current science. It's the kind of tech that could shake up the whole galaxy.
Bad things happen. Boss loses crew members and leaves the wreck. She becomes a shuttle for tourists who want to dive safe, well-known wrecks and tries to forget the dangerous ship. Fat chance. A stranger comes to hire her to go back. Her estranged father is involved, and so is a lot of Boss' past that she'd rather forget.
Wreck diving is a cool concept, and Rush has a fine storyteller. If you like SF adventure, this is one you need to check out for sure.