The team look for a commonality when a series of targeted abductions take place; Savannah is frustrated with Morgan's travelling.
Detective Bailey's sister has a run-in with the wrong side of the law; Murtaugh helps Riana with boy problems.
The Shadowhunters must battle against a massive army of wraith demons summoned forth by a dying Jonathan.
The Institute's leaders suspect an imminent Downworlder uprise after several Shadowhunters are found dead.
Isabelle and Clary seek out the Iron Sisters, hoping to get answers about Valentine's plan, while Simon and Maia work to find Luke.