Warning: Spoilers fromChilling Adventures of Sabrinapart 3 are discussed in this article.
Every seven years, he extends his contract by sacrificing an innocent child and eating their heart.
Caliban (Sam Corlett), molded from clay in Hell, challenges Sabrina for the throne.

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First is the crown.
On their way across town lines, Ambrose and Sabrina pass a sign.
Below that are the words “JJ Wuz Here.”

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Given the accompanying crown symbol, JJ most likely refers to Jughead Jones,Cole Sprouse’s character onRiverdale.
The most clear-cut connection betweenSabrinapart 3 andRiverdale, however, is the name Blossom.
Benjamin seems to be an ancestor of Cheryl “Bombshell” Blossom (Madelaine Petsch).

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It’s not just that Cheryl’s Nana Rose is said to have gypsy blood.
This leads to a war with the coven.
That can only be Pop’s Chock’Lit Shoppe.

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While Mr. Cee is out, someone wanders into Cerberus Books.
It’s a member of the Southside Serpents.
Meanwhile onRiverdale…

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Within hours ofSabrinapremiering on Netflix Thursday night,The CWaired a new episode ofRiverdalethat featured another big crossover.
In fact, it was the most overt crossover fromSabrinatoRiverdale.
Betty interviews a number of football players from various schools to get the goods.

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The Ravens, as we heard in previousSabrinaepisodes, often play the Riverdale Bulldogs.
So, Billy knows what’s up on and off the field.
One of the big mysteries ofSabrinasurrounds when the show takes place.

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But without definitive confirmation from the powers that be, we’ll have to keep guessing.