Recall the Earth
Book two in the Guardian Knights of Terra series.
Lucas’s sister, Katherine, smuggles Rachel to their home planet in the Devon system, but Prince Draven and the soldiers of Nightwatch are waiting there to kill them.
In battle on another world, Lucas is seriously wounded and has no idea of the danger facing his sister and Rachel, or that the Valac are fighting to surround his home world. His entire family may die before he can do anything to save them.