Located in the Alps, sits a luxury hotel that was once a sanatorium for tuberculosis patients.  As the story progresses, readers learn that the facility's history is far actually darker. From the time she arrives, Elin Warner is uneasy.  Something isn't right. The atmosphere is sinister.  She and her boyfriend have traveled there for her brother's engagement party.  It is also a reunion, of sorts.  But, for Elin, it is the opportunity to confront her brother about a family tragedy that she feels he was responsible for.  Will she get her answers?

Gripping from the very beginning, this book is very hard to put down. Elin, a detective on personal leave due to her last case, finds herself in an impossible situation. As a storm rages, people are murdered.  An avalanche makes it impossible for local authorities to arrive on-site and she feels obligated to find the murderer before there are more victims.  The multilayered plot is complex. While there is no shortage of suspects, motives remain elusive.  The author expertly guides readers through Elin's impeccable thought processing. Step by step, every clue is bisected and even though she makes mistakes along the way, she never gives up.

Tension runs high throughout the entire narrative and time is of the essence in the quest to apprehend the killer.  There are plot twists and as for the conclusion, I will say it was a total surprise.

THE SANATORIUM is a fast-paced thriller that is packed with the unexpected.  Highly recommended.