Jonathan begins his reign of vengeful terror as the Shadowhunters try to find a way to stop him. With only one hope, Clary must make a sacrifice that could have…

Alec, Jace and Isabelle make a plan to finally get Clary back and stop Jonathan—much to Luke’s and Simon’s chagrin. Meanwhile, an emotionally raw Magnus struggles to deal with his…

Clary comes up with a plan that will bring Shadowhunters and Downworlders together, as Alec struggles for a way to help Magnus.

A demon outbreak in New York City on Halloween becomes a top priority at the Institute, but as the Shadowhunters hunt the demons, Jace becomes more worried about Clary. Meanwhile,…

To try and save Clary from Jonathan, Jace goes undercover. Back at the Institute, Isabelle, Simon and Luke race to find a way to finally destroy Clary’s bond with Jonathan….

Clary and Jace come up with a risky plan to get rid of her twinning rune, which may bring an old enemy back into the fray. Meanwhile, Alec is worried…

Simon and Izzy team up on a secret mission to figure out what the Clave is hiding. Meanwhile, Clary is conflicted about Jonathan as the Shadowhunters try to get answers.

Jordan and the Praetor try to track down Heidi, while the Shadowhunters try to locate Jonathan. Meanwhile, Luke looks to Maryse for help and Isabelle gets a possible lead on…