Dragon Master Crimson Thunder - 'The Ardon Legacy'. Dragon Master Crimson Thunder, #4

When Crimson Thunder's mother is found dead under mysterious circumstances, it sets off a chain of events that will test the limits of his power and love. As the leader of the Gatekeepers, he must maintain peace between shifter communities while investigating a series of disturbing events involving powerful crystals and altered humans known as Chimeras. With his mate Nyla carrying their triplets, Crimson's protective instincts are at their peak.
But when he's trapped in an underground lair of extinct creatures, he discovers his true heritage as Ardon's descendant, unlocking powers that could either save or destroy everything he holds dear. In this gripping tale of love, loss, and legacy, Crimson must face enemies both ancient and modern while protecting the delicate balance between dragons, wolves, bears, tigers, and lions. With the help of Dark Thunder, La Patron-Silas Knight.
and the Higher Court, he races against time to prevent a catastrophe that threatens the entire shifter world.