A secret marriage. A tragic accident. And a widow whose heartbreak turns to suspicion.

Sandra and Alex have been together for years-and best friends with Blake even longer. So, when Blake suddenly announces he's gotten married, Sandra can't shake the feeling that something is off. Why rush? And why keep such a huge milestone a secret from your best friends? When she finally meets Tara, Blake's new wife, Sandra's unease only deepens. Tara is cold and distant, and something about her just doesn't sit right.

Eager for the foursome to bond, Blake invites Sandra and Alex on a ski trip to Vermont, hoping his friends will warm up to his mysterious wife. But the tension lingers, and Sandra can't ignore a creeping sense of dread.

Then, the unthinkable happens-Alex is killed in a tragic accident on the slopes. Devastated, Sandra is at home grieving when she is visited by detectives with chilling news: Alex's death may not have been an accident. There are questions, surprises-whispers of something sinister.

As Sandra pieces together the last moments of their trip, one name keeps surfacing-Tara. Now, Sandra is left with a terrifying question: Did someone make sure Alex never came back from that mountain? And if Tara is involved ... could Sandra or Blake be next?

Don't look away. The truth is colder than you think. Buy My Best Friend's Wife today!