After the successful closure of a case, William Carlotti has time before his flight; and so, decides to take a leisurely drive through the mountains of Oregon. There, he comes upon the seemingly serene community of Oasis. A place where everything is perfect.
Is Williamís gut feeling that there is something wrong there, right? To find out, Connie goes undercover in the community. Exposing their secrets could lead to the collapse of the community and the discovery of members who have long ago been mourned or forgotten.
As all the secrets at the Oasis are exposed, Connie learns that several members of the Arroyo community have died in explainable or natural causes. With Jonathan and Williamís help, she asks the difficult questions: is it a coincidence, does Arroyo have another serial killer in its midst or just a string of bad luck?