Can a lawman keep a key witness safe?

Deputy Griffin O'Callaghan has a situation on his hands--two dead FBI agents, criminals on the loose and Tory Faraday, a witness with no memory. With a blizzard moving in and killers hunting them down, Griffin must keep Tory safe. But even his family's ranch can't provide a haven when a dangerous criminal escapes from custody with one goal: finding Tory.