Seven years ago, young Stella Pierce vanished from the face of the earth. Now her grieving, broken family - along with Detective Orson Cheever, who never stopped working her case - is stunned by her mysterious return. The now-teenage girl claims to have spent her missing years in the company of Travelers - extraterrestrial nomads - voyaging through space. Despite her family's effort to keep Stella's incredible tale secret, the story becomes a national sensation.

Nina Granville believes her business trip to Alaska will give her a short respite from the merry-go-round that came with her engagement to Congressman Terrence Donnelly. But instead of allowing her the peace she craves, Nina's getaway from the public eye means that no one witnesses her abduction into a very cold hell.

When LAPD detective Michael Gideon and his police-dog partner, Sirius, are assigned to the Special Cases Unit (SCU), Gideon knows their work lives will be anything but ordinary. SCU gets the cases no one else wants, the unusual and bizarre crimes that need special handling and special investigators. When a high-school student is found crucified in a local park, Gideon and Sirius must face up to the gruesome tableau and the motivation behind the murder. Complicating matters is a nightmare from their past, the scars of a terrible fire that nearly cost them their lives.

What happens to a seven-year-old boy who sees his parents die in a murder suicide? There is trauma, of course, and an impact to his emotional health from which you may never recover. Noah Foster was that boy, and his struggle with post-traumatic stress has left him without emotions, without a conscience and without whatever it is that once made him human.

On the muddy banks of the Calumet River, a body has been found posed next to a series of mysterious glyphs and bearing wounds from a ritualistic slaying. Chicago detective Addie Bisset knows only one man who can decipher the message left by the killer: her friend Dr. Evan Wilding. A brilliant forensic semiotician, Evan decodes the etchings as Viking Age runes. They suggest either human sacrifice or righteous punishment. But to what god? And for what sins? Only one thing is clear from the disturbing runic riddles: there are more victims to come.