A hitched ride home in a snow storm turns sinister when one of the passengers is plotting for the ride to end in disaster.

When Mira flies home to spend Christmas with her mother in Pittsburgh, a record-breaking blizzard results in a cancelled layover. Desperate to get to her grief-ridden mother in the wake of a family death, Mira hitches a ride with a group of friendly college kids who were on her initial flight.

As the drive progresses and weather conditions become more treacherous, Mira realizes that the four other passengers she's stuck in the car with don't actually know one another.

Soon, they're not just dealing with heavy snowfall and ice-slick roads, but the fact that somebody will stop at nothing to ensure their trip ends in a deadly disaster.

Time changes things.

That painful fact of life couldn't be truer for the Sullivan sisters. Once, they used to be close, sharing secrets inside homemade blanket castles. Now, life in the Sullivan house means closed doors and secrets left untold.

Fourteen-year-old Murphy, an aspiring magician, is shocked by the death of Siegfried, her pet turtle. Seventeen-year-old Claire is bound for better things than her Oregonian hometown—until she receives a crushing rejection from her dream college. And eighteen-year-old Eileen is nursing a growing addiction in the wake of life-altering news.

Then, days before Christmas, a letter arrives, informing the sisters of a dead uncle and an inheritance they knew nothing about. The news forces them to band together in the face of a sinister family mystery…and, possibly, murder.