Most of the story is told from the viewpoint of Laura, with some chapters by her partner Kit. Both are witnesses to a crime that brings them into contact with Beth, who might be dangerous or is she?
Eyewitness testimony is a rather complex subject (I live with an expert on it) but it’s the fallout of the case Laura and Kit testify at that drives the drama in the narrative. Eventually Laura is living her life in ongoing terror and spiralling anxiety, something I can relate to (though thankfully not in the same circumstances).
I did not expect the clever twist at the end, which flips the plot on its head – no spoilers here.
I highly recommend you pick up a copy and read it asap.