It is their job to protect the mortal realm, but are secrets the only way they can protect each other? Lin Thoren, a beautiful Norse goddess turned private detective, embarks on a new case to locate a missing girl in London. But the fantastical always has a way of finding her. During her investigation, she meets Agna, the goddess Freya's witch and former protector of King Tutankhamun. Meanwhile, Lin's personal biographer Mary Lambert is contending with her new role as mother to a demigod. When Lin returns to their suburban home near Washington D.C., Agna in tow, Mary is tasked with keeping a secret that, if broken, could lead to their own personal Ragnarok.