<p><b>A mother and her children murdered.</b><br><b>A nanny on the run.</b><br><b>A killer in pursuit.</b><br><br>Hunted and reviled, ex-nanny Joanne Mason turns to her sister, Detective Karen Ratcliffe. Torn between duty and family, Ratcliffe asks Tess Grey and her partner Nicolas ''Po'' Villere to bring Joanne in safely.<br><br>A winter cyclone forces Joanne into hiding on the Canadian border - but she can''t stay put for long. In close pursuit, Tess and Po head north into the heart of a storm, but they''re not the only ones: the real murderer is also hot on Joanne''s trail, trying to kill the only living witness to their crime.<br><br>As the chase progresses it grows apparent that Joanne couldn''t have been responsible for the murders . . . but the heat isn''t off her. Some people think she might be a co-conspirator, not the terrified witness she is . . . and when the shocking truth behind the gruesome murders comes to light, Tess and Po have their work cut out to keep Joanne - and