Jade Hassouné hunts shadows with Luke and Matthew at the Wellington County Poorhouse in Fergus, Ontario.
When Iris activates her blood oath, Clary has more to worry about than hiding from Valentine and the Downworlders; Isabelle and Raphael get closer; Alec tries to figure out what's happening with his sister.
Meliorn reveals that Clary can locate Valentine by accessing a portal via an alternate dimension.
Clary, Jace, Alec and Isabelle work to rescue Simon from the vampire hideout, Hotel du Mort.
The Institute and The Clave go on high alert.