My Soul to Take by Yrsa Sigurðardóttir

If I die before I wake … A grisly murder is committed at a health resort situated in a recently renovated farmhouse, which turns out to be notorious for being haunted. Attorney Thora Gudmundsdottir is called upon by the owner of the resort — the prime suspect in the case — to represent him. Her investigations uncover some very disturbing occurrences at the farm decades earlier. Things that have never before seen the light of day..