- Ep: 34
- On Infernal Ground
- Guest Starring: Will Tudor (Sebastian Verlac), David Castro (Raphael Santiago), Mimi Kuzyk (Imogen Herondale), Lola Flanery (Seelie Queen), Jade Hassouné (Meliorn), Alexandra Ordolis (Ollie), Anna Hopkins (Lilith), Tessa Mossey (Heidi McKenzie)
- Co-Starring: Natalie Moore (Stella), Randal Edwards (Tim), Sophia Walker (Catarina), Phillip MacKenzie (Brother Enoch), Troy James (Flying Demon), Eileen Li (Aline Penhallow), Brooks Darnell (Charlie), Gina Phillips (Young Professional), Brian Kaulback (Elderly Man)
- Written By: Todd Slavkin & Darren Swimmer
- Directed By: Matt Hastings
- Memorium: In Memory of Simon Jacques
- Ep: 35
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- Ep: 36
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- Ep: 37
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- Ep: 38
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- Ep: 39
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- Ep: 40
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- Ep: 41
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- Ep: 42
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- Ep: 43
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- Ep: 44
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- Ep: 45
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- Ep: 46
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- Ep: 47
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- Ep: 48
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- Ep: 49
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- Ep: 50
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- Ep: 51
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- Ep: 52
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- Ep: 53
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| Katherine McNamara .................... Clary Fray |
| Dominic Sherwood .................... Jace Wayland |
| Alberto Rosende ...................... Simon Lewis |
| Matthew Daddario .................. Alec Lightwood |
| Emeraude Toubia ............... Isabelle Lightwood |
| Alisha Wainwright ................... Maia Roberts |
| Isaiah Mustafa ..................... Luke Garroway |
| Harry Shum, Jr. ...................... Magnus Bane |
