The Nine Realms Series Series by Mark Cole

When Terra Duval is kidnapped by the Demon Lord Azreal, Alex Zane must venture from Earth to the Realm of Magic to rescue his love. Together, Alex and Terra must unite the forces of a fractured world to free the Nine Realms. But will his love for Terra prevent him from saving those he has been charged to protect, or will it be the catalyst Alex needs to save the Nine Realms?

Fate has been led astray.

Earth is under siege.Alex and Terra have arrived on Earth in time for their daughter to be born, but the Overlord of Hell has launched an attack that threatens to topple the stability of the Nine Realms.  The Realm of Balance is burning.