Troy Brownfield 
Legend of Isis: The New Kingdom #3 [EPUB ebook] 

Trapped on an alien world that’s been corrupted and conquered by Set, Isis is alone without her friends, without her staff, and without hope. Faced with ultimate defeat, Isis can only watch as the Children of Set prepare to invade Earth! Could the key to victory be in the hands of the mysterious White Jackal? Find out in The Legend of Isis: The New Kingdom #3, “Gate of Stars!”