A captivating read from the start,I was caught up in the creepy,ominous feelings from the building and the occupants of the other apartments.The tension the main character was feeling was palpable I couldn't help feeling unsettled in the best of ways whilst reading this book.I loved the sweet moments between Rachel and Lily and of course I was here for the disturbing/ unnerving moments too. A twisty, atmospheric thriller that was addictive.