- Katherine McNamara as Clary Fairchild
- Dominic Sherwood as Jace Herondale
- Alberto Rosende as Simon Lewis
- Matthew Daddario as Alec Lightwood
- Emeraude Toubia as Isabelle Lightwood
- Alisha Wainwright as Maia Roberts
- Isaiah Mustafa as Luke Garroway
- Harry Shum Jr. as Magnus Bane
- Filming for the episode took place around the third week of April.
- The title "Aku Cinta Kamu" means "I love you" in Indonesian.
- The episode is set to feature a Sizzy scene.
- Show writer Bryan Q. Miller used the words "the betrayal" to tease the episode, suggesting that a betrayal may occur in this episode.
- Kosti Lustr may be featured.
- ↑ ‘Shadowhunters’ To End After 3 Seasons, Freeform Orders 2-Hour Finale To Wrap Series In 2019 | Deadline
- ↑ https://twitter.com/jamiegorenberg/status/974183338268229632
- ↑ https://twitter.com/jamiegorenberg/status/979230629278621696
- ↑ http://web.isan.org/template/1.2/publicSearch.do?code=0000-0004-1432-0034&nav=1
- ↑ 5.0 5.1 5.2 https://www.imdb.com/title/tt7370770/fullcredits?ref_=tt_cl_sm#cast
- ↑ 6.0 6.1 "3x19 is being filmed as we speak." Jamie Gorenberg on Twitter
- ↑ https://twitter.com/jamiegorenberg/status/975955465279389697
- ↑ "319 the betrayal" Bryan Q. Miller on Twitter
- ↑ https://twitter.com/jamiegorenberg/status/1077245386140479488?