Freeform har gett oss både avsnittsnamn och beskrivningar för avsnitten 3x16 till 3x20.
3x16 "Stay With Me" - sänds 1/4 i USA.
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 about Magnus.
3x17 "Heaveny Fire" - sänds 8/4 i USA.
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.
3x18 "The Beast Within" - sänds 15/4 i USA.
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, Alec has to juggle the outbreak with his deep concern about Magnus’ depression.
3x19 "Aku Cinta Kamu" - sänds 22/4 i USA.
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. With time running out, can Isabelle create the solution before Jace’s cover is blown?
3x20 "City of Glass" - sänds 29/4 i USA.
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 father’s reappearance and Maia must make a tough decision that could affect the rest of her life.