Secrets in the Shadow by Lynn Hagen

Scarred by torment and driven by the need to protect the secrets locked within him, Raziel has spent centuries in the shadows, hunted and haunted by his past. Discovering a son he never knew existed shatters the fragile control he’s fought to maintain. Watching from the shadows is torture, yet stepping into the light could bring ruin to them both.
Cody’s quiet life takes a wild turn when a half-dressed stranger disrupts everything. With secrets in his eyes and danger in his wake, Raziel is everything Cody never expected, and exactly what he can’t seem to resist. His presence defies logic, pulling Cody into a world where danger hides in plain sight.
As the enemies draw closer and Cody’s world tilts further off balance, the two are caught in a storm of betrayal and chaos. Trust is fragile, and survival isn’t guaranteed, but some connections are worth fighting for—even if the odds are stacked against them.