The Wolf at His Door by Adrian W. Lilly

Ilene Rune has lived with a secret for 21 years that threatens to destroy her marriage, her life, and all of humanity. But how can she tell her son, Alec, that his new boyfriend, Jared, may be part of that secret?
Investigating a brutal murder, Detective Lance Herald enters a dark world of fairy tales and fantasy—that shakes his belief in what is possible and imagined.
Lucy Rune cannot fathom what happened the night one brother was slaughtered and the other critically wounded—but she does know, her boyfriend, Rene, who was also attacked is changing.
Geraldine Bloom, Alec’s grandmother, has the gift of foresight, and has waited for years for the evil that wants her grandson to come for him.
Alec Rune wakes from a coma to learn his twin brother has been murdered—and that he is the only witness. But he remembers nothing of the night.
Werewolves, genetics, and a thrilling murder mystery intertwine in this “multi-layered and unpredictable” (Christine Coretti) horror novel that builds to “an absolutely epic ending” (thegayUK.com).