Day of Atonement
Season 2, Episode 16
TMI216promo Clace02
Broadcast Information
Premiere date July 17, 2017
Written by Peter Binswanger
Directed by Paul Wesley
Episode Guide
Season Two
 1  2  3  4  5  6  7  8  9  10
 11  12  13  14  15  16  17  18  19  20
A Problem of Memory A Dark Reflection

Day of Atonement is the sixteenth episode of the second season of Shadowhunters: The Mortal Instruments.


With everything that Simon has gone through this past year, a family dinner for Yom Kippur – the Jewish Day of Atonement – poses as a real challenge. How can he come clean about being a vampire and especially about what just happened to his family? And if he is stressed out, what if he can't control his vampire urges? Looking to take care of this himself, Maia insists on helping him out whether he likes it or not. Meanwhile, Clary and Jace go on an unsanctioned mission and test out their newfound rune powers.


  • Peter Binswanger — writer
  • Paul Wesley — director




  • "Four Walls (The Ballad of Perry Smith)" - Bastille
  • "Anchor" - Novo Amor
  • "Upstairs Room" - Paul Cook & The Chronicles


The following are elements adapted from The Mortal Instruments:

  • Clary was able to create a Portal, a feat no other Shadowhunter is capable of.
  • Portaling to Idris without sanction from the Clave will open the Portal around Lake Lyn, whose water has hallucinogenic properties. A person who drinks from the lake, if left untreated, can lose their mind.[1]
  • A Portal that breaks may sometimes leave shards of glass that may give glimpses of the last destination the Portal was used to reach.[2]
  • Maia has a dead brother who was their parents' favorite.

For differences, go here.

  • Filming ended on March 29, 2017.[3]


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