Commander Astra Solara is Earth's current 'Mission Queen', a self-possessed intelligence officer who has taken so many risks and survived so many perilous assignments while exploring the galaxy's most remote sectors, that every time she returns to Earth, she's considered an ever greater security risk.

Captain Hylar Moondarla is Earth's most celebrated starship pilot - she's been everywhere and seen everything, most of it as Commander Solara's best friend and trusted partner - until a terrible secret came between them...

Now on opposite sides of the galaxy, somebody within...