Cold fire

"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. 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...