Season 3
While the Shadowhunters deal with changes in their personal lives and Clary and Jace keep dark secrets, a serious threat to the Shadowhunters emerges in the form of Lilith, a powerful demon building an army of disciples on a quest to resurrect her "precious boy" Jonathan.
Episodes
1 On Infernal Ground Mar 20, 2018 
2 The Powers That Be Mar 27, 2018 
3 What Lies Beneath Apr 3, 2018 
4 Thy Soul Instructed Apr 10, 2018 
5 Stronger Than Heaven Apr 17, 2018 
6 A Window into an Empty Room Apr 24, 2018 
7 Salt In the Wound May 1, 2018 
8 A Heart of Darkness May 8, 2018 
9 Familia Ante Omnia May 15, 2018 
10 Erchomai May 15, 2018 
11 Lost Souls Feb 25, 2019 
12 Original Sin Mar 4, 2019 
13 Beati Bellicosi Mar 11, 2019 
14 A Kiss from a Rose Mar 18, 2019 
15 To the Night Children Mar 25, 2019 
16 Stay With Me Apr 1, 2019 
17 Heavenly Fire Apr 8, 2019 
18 The Beast Within Apr 15, 2019 
19 Aku Cinta Kamu Apr 22, 2019 
20 City of Glass Apr 29, 2019 
21 Alliance (1) May 6, 2019 
22 All Good Things... (2) May 6, 2019