Beyond the Veil by S.C. Wynne

Being a psychic in the small seaside town of Fox Harbor is challenging enough, but winter months are brutal. Not that using his clairvoyant abilities to hunt down lost pets isn’t thrilling, but Lorenzo wouldn’t mind a tiny bit more excitement in his life.
Be careful what you wish for?
Things get more stimulating when the charismatic Dr. Ian Thatcher takes a romantic interest in him. Unfortunately, their promising evening takes a ghastly turn when an old man dies on Lorenzo’s doorstep, after warning Lorenzo his life is in danger.
Before Lorenzo can say “Give me my old boring life back, please” his home is ransacked, a fiery being tries to burn him to death, and he’s informed he’s the only hope to save the world.