Hallowed murder

The police think Allison drowned, but her University of Minnesota sorority sisters insist it was murder. That's when almunae advisor Jane Lawless steps in to find the truth. Abetted by her irrepresssible sidekick Cordelia, Jane searches for clues, and what she finds is as chilling as the Minnesota winter - for in those icy drifts, at a lonely vacation house, she risks everything to ensnare a cunning killer...