No Exit by Taylor Adams (Author)

Soon to be a Hulu original film: a fast-paced, edge-of-your-seat thriller about a determined young woman who struggles to save a kidnapped child while trapped in a blizzard—and who must unmask and outwit a deviously twisted psychopath before it’s too late.
A kidnapped little girl locked in a stranger’s van. No help for miles. What would you do?
On her way to Utah to see her dying mother, college student Darby Thorne gets caught in a fierce blizzard in the mountains of Colorado. With the roads impassable, she’s forced to wait out the storm at a remote highway rest stop. Inside are some vending machines, a coffee maker, and four complete strangers.
Desperate to find a signal to call home, Darby goes back out into the storm . . . and makes a horrifying discovery. In the back of the van parked next to her car, a little girl is locked in an animal crate.