The Second Stranger One detective. One murderer. But which is which?

First impression was a little bit divided in two: I enjoyed how fast the story developed. Immediately you are in the middle of one fateful night at the remote hotel in Scotland. No unnecessary prologue / exhausting reading until the action begins. I love that! On the other hand, I found it a bit difficult to feel the danger the main character was in. I found the two strangers harmless - nothing to be afraid of. Of course this changed, but not before I was half through the book. However, this book was enjoyable to read. I got through it in three days and I would definitely recommend it.