Overall:   This is a locked-room murder mystery about a ski chalet in the French Alps that gets hit by a snowstorm / avalanche and traps everyone there. The two employees running the chalet, along with the executive team of a music-sharing app start-up called Snoop, all become cut off from civilization with no cell service, power, heat, or water …. and that is the least of their problems.  Members of their tight-knit company start to disappear and others are killed.  One by one, their numbers are dwindling, along with their food and their sanity.  None of them can figure out what is happening to their co-workers, but many of them have secrets to hide and motives for murder.  They came to this mountain retreat in the first place because the founding members can’t agree on what to do with their start-up next.  They have a very lucrative buy-out deal on the table that some of them want to accept.  While the others want to remain in control of the company and take it public themselves.  They tried to keep everyone happy by taking in a recreational day of skiing.  However, one of their members never returned from the day of skiing.  Then the big snowstorm rolls in, there is an avalanche, and they are all now trapped together in the chalet worrying about their friend who is still out there somewhere on the mountain.  Only one of them knows where she really is and what exactly happened to her.  Only one of them knows that she is never making it back.      

Opinion:  I found the idea of this music sharing app to be really interesting, and that made the start-up company of Snoop very believeable right from the start.  We get introduced to all the members of the company, and there are a lot of them.  It is hard to keep track of who is who.  The author must have realized this, because there is a helpful section in the front of the book that lists some of their names and descriptions, but does not include everyone for some reason.  I had to bookmark this page and look back at it for half the book until I remembered who everyone was.  Plus, with so many characters, you don’t get a full in-depth feeling for who each of them are.  But, I do love a locked-room murder mystery!  This one was good.  It was believeable the whole time, meaning everyone had reasons for doing what they did.  The story is both a mystery and a thriller.  The plot pacing was good.  I was always wondering what was going to happen next.  There was a lot of suspense throughout the whole book.  I liked that they were all fighting against the problems from the storm (avalanche, snowed-in, no Wi-Fi service, unable to get help, no electricity, no heat, no water) …. and also the fighting against the problems of people being murdered, and knowing they are trapped with a murderer, but not knowing who it is.  There were no plot holes in the mystery, and the ending was exciting.  I recommend this book anytime you want to read it, but reading it in the cold & snowy wintertime (like I did) is best.  Rating 9 out of 10