Herald of the Abyss: The Seventh Heaven War Series, Avarin Voss, Book 6

Romance, Family, Travel, Fantasy, War, Religion & spirituality, Supernatural, and Action & adventure

Every Silver Gravity story centres women with agency.

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Some ancient powers were never meant to awaken.

The supernatural war has erupted into the open. Across the globe, stunned news anchors report on phenomena they cannot explain: angelic sightings, demonic attacks, and battles that defy the laws of physics. As governments scramble to respond and religions grapple with vindication and terror alike, humanity faces a truth both wondrous and devastating: they were never alone in the universe.

At an ancient monument revered across civilisations, the demon lord Sarathiel conducts a final, catastrophic ritual. His goal: to awaken the Abyss Herald, a primordial entity that predates even the creation of angels, an embodiment of chaos so powerful that neither Heaven nor Hell could contain it.

With the traitor in Heaven's council exposed but the damage already done, Aurelia faces her most impossible mission yet. Heaven itself stands divided. To have any hope of stopping the Abyss Herald, she must unify both her earthbound coalition and the fractured celestial armies. Her plan: a return to Heaven itself through a hidden dimensional gate in an ancient temple, armed with evidence of betrayal and the urgency of impending apocalypse. The risk is absolute: instant execution or imprisonment for eternity.

Cassian stands beside her without hesitation. Before the archangels and the assembled hosts, he publicly declares his allegiance to Aurelia above Heaven's rigid hierarchy, willing to sacrifice his celestial birthright for the greater good and for love.

Perfect for fans of Rebecca Yarros's Empyrean, Cassandra Clare's Shadowhunters, and readers who crave apocalyptic fantasy where forbidden love becomes the ultimate power against cosmic darkness.

About the Seventh Heaven War Series

The Seventh Heaven War Series is a seven-book urban fantasy romantasy epic where celestial politics collide with modern cities, forbidden love challenges divine law, and an exiled warrior must decide the fate of Heaven, Hell, and Earth.

At the centre of the story is Aurelia, a once-elite angel cast down to Earth with shattered memories, scorched wings, and a past powerful forces want erased. As demonic unrest rises and rogue angels emerge, Aurelia becomes entangled in a conspiracy hidden inside Heaven itself.

The series blends:

Fallen angels and celestial warfare
Forbidden love and loyalty under pressure
Prophecy, rebellion, and ancient power
Urban fantasy with modern settings
Emotional romance alongside world-ending stakes

Each book builds toward a larger conflict. This is a series best experienced in order.

What Kind of Fantasy Is This?

This series is best described as:

Urban fantasy romantasy + celestial war epic

Combining:

Angels, demons, and divine politics
Slow-burn or forbidden romance
Hidden worlds beneath modern society
Epic battles with emotional consequence
Female protagonists carrying impossible destinies

If you enjoy stories where love and war shape entire realms, this series is written for you.

If You Love Fantasy, Fallen Angels, or Celestial Conflict…

Readers who enjoy:

High-stakes romantic fantasy
House of Earth and Blood for urban fantasy worlds
Lucifer for celestial politics
Hush, Hush for forbidden angelic romance

…will likely enjoy The Seventh Heaven War Series.

What sets this series apart is its focus on memory, exile, rebellion, and the cost of challenging divine systems.

Story Tropes & Reader Appeal

This series contains many beloved romantasy tropes:

Fallen angel heroine
Hidden celestial war
Forbidden attraction
Lost memories and hidden identity
Chosen-one prophecy
Ancient enemies becoming allies
Slow-burn loyalty under impossible conditions

Is This Book For You?

You will likely enjoy this series if you love:

Urban fantasy with emotional depth
Romantasy with world-building and stakes
Strong female protagonists carrying impossible burdens
Stories where love matters as much as survival

You will especially enjoy this instalment if you like fallen angels, hidden realms, forbidden romance, and epic celestial conflict.

Do I Need to Read the Series in Order?

Each Devereaux Dynasty novel contains its own romance arc and central conflict and can be enjoyed as a standalone.

Reading in order deepens understanding of:

Unlike some of the other Silver Gravity series, The Seventh Heaven War is best read sequentially.

Reading in order deepens understanding of:

Aurelia’s evolving identity and memories
Celestial factions and divine politics
The growing war between Heaven, Hell, and Earth
The emotional progression of the central relationships

Reading tip:

Start with Book 1: Fallen Grace and continue in sequence for the full epic journey.The Devereaux siblings and family dynamics
Recurring tensions around inheritance and reputation
The wider emotional journey of the dynasty