Silence and Shadow by Erin Beaty

In this unforgettable sequel to the fantasy thriller Blood and Moonlight, sizzling romance, dangerous magic, and deadly secrets collide when Catrin and Simon face a cunning new serial killer who threatens to tear them apart.

Forced to flee for their lives after an explosive confrontation with a depraved killer, Selenae novice Catrin and brilliant criminal profiler Simon arrive in the sprawling city of Londunium, hoping for a fresh start and an opportunity for Catrin to hone her newfound magic. To avoid raising suspicion, they pretend to be a married couple, but don’t expect to keep up the ruse for long. Until a ruthless council of magical leaders at the local Selenae university discover Catrin’s forbidden “marriage” to an outsider and threaten to erase Simon’s memories to protect their secrets.
Terrified to lose each other, Catrin and Simon take desperate steps to keep him safe, like playing the parts of husband and wife for longer than they had anticipated. But when a string of mutilated bodies turns up in the woods outside the city, and Simon is recruited to profile the killer, Catrin is pulled back into a world of murder, mayhem, and magic . . .