Frozen meets A Good Girl's Guide to Murder.

It's been ten years since 17-year-old Nikki Sinclair's parents and sister left home and never returned.

Evidence uncovered at the scene caused the police to rule it a triple homicide, but since their bodies were never found, the case ran cold and was never solved. Living in her family's giant lonely estate all this time, the sole heiress to the huge fortune they left behind, Nikki has come to accept that her family is really dead. Lizzy, her sister - her best friend - is gone forever.

Until she begins receiving mysterious messages from an unknown number claiming to be her dead sister, leading to hidden clues only Lizzy could have known about and begging for help. Nikki begins to question everything. What actually happened to her family all those years ago, and could her sister really be out there somewhere? Is she in danger?

As the messages get more dire, and other circumstances make finding Lizzy more urgent, Nikki recruits the help of Kieran Bergstrom. He's the voice of her favorite true crime investigative podcast, and even though he turns out to be much harder to work with than she expected, she has no one else to turn to. She's desperate to find the truth and solve her family's case at any cost. All Nikki knows is this: if there's a chance even as small as a snowflake that her sister could really be alive, she'll walk to the ends of the earth in a blizzard to look for her.

A story of a sister's love, seeking justice against all odds, and not participating in the act of murder on your very aggravating, very arrogant, and very blonde colleague - who may or may not have some secrets of his own.