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Star vs. the Forces of Evil S3E12 — Demoncism

8.8

Star vs. the Forces of Evil•Season 3•Episode 12

Demoncism

8.8/10 · 419 votesNov 8, 201711 min

Ranked #10 of 38 in Season 3•+0.9 vs season avg

Star and Tom's relationship is put to the test when Tom decides to get rid of his demons.

Previous episodeE11 · Stranger Danger Next episodeE13 · Sophomore Slump

Seasons4

Season 3 Episodes38

Battle for Mewni: Return to Mewni still

Battle for Mewni: Return to Mewni

Battle for Mewni: Moon the Undaunted still

Battle for Mewni: Moon the Undaunted

Battle for Mewni: Book Be Gone still

Battle for Mewni: Book Be Gone

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Battle for Mewni: Marco and the King

Battle for Mewni: Puddle Defender still

Battle for Mewni: Puddle Defender

Battle for Mewni: King Ludo still

Battle for Mewni: King Ludo

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Battle for Mewni: Toffee

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Scent of a Hoodie

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Rest in Pudding

Club Snubbed still

Club Snubbed

Stranger Danger still

Stranger Danger

Demoncism still

E12 8.8Now viewing

Demoncism

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Sophomore Slump

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Lint Catcher

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Trial by Squire

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Princess Turdina

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Starfari

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Sweet Dreams

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Lava Lake Beach

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Death Peck

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Ponymonium

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Nightlife

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Deep Dive

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Monster Bash

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Stump Day

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Holiday Spellcial

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The Bogbeast of Boggabah

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Total Eclipsa the Moon

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Butterfly Trap

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Ludo, Where Art Thou?

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Is Another Mystery

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Marco Jr.

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Skooled!

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Tough Love

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Divide

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Conquer

Cast3

Eden Sher

Eden Sher

Star Butterfly (voice)

Adam McArthur

Adam McArthur

Marco Diaz (voice)

Alan Tudyk

Alan Tudyk

Ludo / King River Butterfly (voice)

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Episode Summary

"Demoncism" is episode 12 of Star vs. the Forces of Evil season 3. It scored 8.8/10 from 419 votes, ranking #10 of 38 episodes this season (season average 7.9). It aired on November 8, 2017.

Next: E13 · Sophomore Slump Best of Season 3