Zelda attempts to forge a supernatural alliance, Sabrina and the gang work with Caliban, and Hilda's transformation takes a terrifying turn.

On the heels of tragedy, the Spellmans receive a grim omen. Blackwood seeks vengeance. Sabrina prepares for her final challenge against Caliban.

As an all-consuming darkness trickles into town, Sabrina grapples with feeling like the odd witch out — and makes a risky plan for a whirlwind trip.

The lines between past, present and future blur as Sabrina stages an act of heroic restoration. But will her powers prove to be enough?

Ambrose treats Nick's affliction while Harvey and Theo tend to Roz. Meanwhile, Sabrina and Caliban continue in their unholy regalia challenge.

In Greendale, Sabrina explores a new hobby ... and a disturbing duty. Elsewhere, Prudence and Ambrose continue their search for Father Blackwood.

In an alternate universe, Sabrina Morningstar meets a cast of familiar faces — and investigates the thin line between fact and fiction.

Sabrina visits a mysterious (and familiar) town. Zelda aims to restore order at the academy. A carnival creates buzz in Greendale. Theo takes a chance.

Sabrina recruits Roz, Harvey and Theo for an emotional mission. Prudence and Ambrose travel to New Orleans. Ms. Wardwell returns to Baxter High.

The coven celebrates a festive tradition -- and crosses paths with unexpected guests. Nick struggles to strike a balance between pleasure and pain.

Panic turns political as Sabrina and Roz run for Baxter High co-presidents. Harvey struggles with Roz's reveal. Blackwood takes control of the terror.

Sabrina encounters a surprise at school — and faces a pivotal decision. Theo explores the perks and pitfalls of Robin's time in the mortal world.

A grim visitor sends Roz and Harvey into a panic. Elsewhere, Sabrina reconnects with an enemy from her past, and Aunt Hilda's wedding day arrives.

The next terror graces Greendale. Sabrina bonds with a new classmate... and finds herself in a squeamish predicament. Roz uncovers a shocking truth.

As Sabrina longs for a piece of her past, vengeful visitors return to Greendale. The Fright Club competes in a life-or-death battle of the bands.

The darkest days of the void arrive as Sabrina struggles with grief and regret. Can she summon the strength to overcome an endless cycle of destruction?