The Girl Upstairs by Georgina Lees (HarperCollins UK, One More Chapter)

Suzie lives in London almost in isolation. Heartbroken and lonely she dwells in a deep grief, her small apartment is at the same time a refuge and a damnation. Upstairs flat is a rental, and she has seen people come and go, some worse than others, but none quite as bad as Emily. Annoying noises that she makes are obviously designed to cover her loneliness.

One day the noises stop and Emily is obviously missing. Suzie becomes obsessed with Emily's dissapearance. Due to her concerns interferes to police investigation and in the process finds herself again.

Protagonist Suzie is relatable in her loneliness, anxiety and isolation which are often common in big cities. Narrative flows and the plot is complex and believable.

Fast-paced and unputdownable psychological thriller.

4/5