It's the classic locked-room mystery--a member of the Peculiar Crimes
Unit killed inside a sealed morgue populated only by the dead and to
which only four PCU members had a key. To make matters worse, the Unit
has been shut down for a forced "vacation," and Bryant and May are stuck
in a van in the Dartmoor countryside during a freak snowstorm. Now
they'll have to crack the case by cell phone while trying to stop a
second murder without freezing to death. For among the line of trapped
vehicles, a killer is on the prowl, a beautiful woman is on the run, and
an innocent child is caught in the middle....