Twenty years ago, four young women set out on a backcountry ski trip in the Colorado Rockies.

Four days later, only three emerged alive.

It's now Christmastime in Denver, and private investigator Kristin Ashe believes the tragedy relates to recent threats at a daycare center owned by Lori Parks. However, when her client is less than forthcoming, Kristin has to find other ways to uncover the truth about the ill-fated excursion.

Fran Green, Kristin's feisty sidekick, wants to help, but she's addicted to snowboarding and facing a crisis of her own.

As Kristin's investigation takes her deep into the snowy mountains, she must race through the past and present in order to prevent further unbearable losses.