A gripping tale of betrayal, murder, and redemption. Detective Alisha Barba hadn't heard from her long lost friend Cate in years, but when she receives a frantic letter pleading for help, she knows she must see her. They want to take my baby. You have to stop them, Cate whispers to Alisha when they finally meet. Then, only hours later, Cate and her husband are fatally run down by a car. At the crime scene, Alisha discovers the first in a series of complex and mysterious deceptions that will send her on a perilous search for the truth, from the dangerous streets of London's East End to the decadent glow of Amsterdam's red-light district.