This is book 5 of the Eternal Flames series.
 
Thinking he had lost his mate Marco, Finn felt his life shatter before his eyes, until their friend Pauly had saved the man. Relief filled him at the sight of Marco opening his eyes, but shock once again grabbed him as his brother Jett’s best friend, and pain in the ass, Twix grabbed him, kissed him, then declared they were mates.
 
Finn, Marco, and Twix have spent many months getting to know one another, then the fateful night of their mating comes and their world is shaken to it’s very core. The truth of Twix’s heritage is revealed, sending shockwaves throughout the city of Crystal and all its inhabitants.
New allies are found, old friends are reunited, and new enemies are on the prowl. As leaders, Illan and Justice must bring all the dragon and phoenix together to take a stand to protect all of the shifter world, and keep everyone they love safe.
 
Learning what Finn and Marco have about their little mate Twix, they know that they must do everything they can to keep him safe, because others are out there and evil is coming. With their mating has come a higher calling.