'Shadowhunters' Season 3B episode 12: Fans were given Clace, Sizzy and Malec, and they can't stop buzzing about it

A Clace reunion, a steamy Malec, and the most adorably quirky Sizzy - all arrived in the same episode. Talk about miracles!

This article contains spoilers for 'Shadowhunters' season 3B episode 12: 'Original Sin.'

'Shadowhunters' dropped its episode 12 of season 3B Monday, and looking by the responses from fans, it's been legendary, both in terms of teasing them, and offering them enough material to drool and gush over for the coming week until its next episode. While fans are happy that the much deserved and anticipated Clace reunion finally happened, they also felt the pangs of being teased to no extent by a new and revamped Malec, and, of course, by how quirky yet inevitable the budding Sizzy romance looks like.

The official synopsis of the episode reveals: "Simon tries to track down New York's oldest vampire to get more information on the Mark of Cain; now in Paris, Clary desperately attempts to find an escape from her current situation; Magnus tries to live life to the very fullest." So, lets dive into what went down.

GET THE BIGGEST ENTERTAINMENT STORIES
STRAIGHT TO YOUR INBOX.

MORE STORIES

Sean Reagan’s past shapes a rescue in ‘Boston Blue’ Season 2 Episode 6 as Mika Amonsen discusses continuing the character’s ‘Blue Bloods’ story.
2026-11-14T19:02:59.000Z
Left Bank Pictures has responded to a tragic incident at the Edinburgh studio used for ‘Dept. Q’ as police inquiries into the circumstances continue.
2026-11-14T15:25:47.000Z
A fan-favorite ‘Matlock’ star shares a behind-the-scenes update as the CBS drama prepares for its Season 3 return.
2026-11-14T14:08:57.000Z
‘Gilmore Girls’ documentary ‘Drink Coffee, Talk Fast’ brings back familiar cast members, including Jared Padalecki and Scott Pattersonts
2026-11-14T10:08:21.000Z
'CSI' veteran Marg Helgenberger was once one of the highest-paid small-screen actresses
2026-11-14T09:17:43.000Z
Dexter sets his sights on the Jaw Splitter in Season 2, Episode 3, while a fan theory links the mysterious killer to actor Jack Dylan Grazer.
2026-11-14T07:37:35.000Z
‘Law & Order: SVU’ showrunner Michele Fazekas addresses Benson and Stabler’s future after their emotional reunion in the milestone 600th episode
2026-11-14T07:25:13.000Z
‘Station 19’ alum Jay Hayden joins ‘Fire Country’ Season 5 as Mason Ellis, whose return to Edgewater sparks a new conflict between Bode and Jake
2026-11-14T06:34:18.000Z
CBS brings ‘Marshals’ and ‘Tracker’ back to its Sunday lineup on November 15 with new episodes following a one-week break for ‘Cupertino.’
2026-11-14T05:54:18.000Z
Boone and Mickey's relationship gets complicated with Emmy's arrival in 'Sheriff Country'
2026-11-14T04:43:33.000Z