The telling error - Sophie Hannah

Stuck in a traffic jam, Nicki Clements sees a face she hoped never to see again. It's definitely him, the same police officer, stopping each car on Elmhirst Road. Keen to avoid him, Nicki does a U-turn and makes a panicky escape.

Or so she thinks. The next day, Nicki is pulled in for questioning in connection with the murder of Damon Blundy, controversial newspaper columnist and resident of Elmhirst Road.

Nicki can't answer any of the questions detectives fire at her. She has no idea why the killer used a knife in such a peculiar way, or why 'HE IS NO LESS DEAD' was painted on Blundy's study wall. And she can't explain why she avoided Elmhirst Road that day without revealing the secret that could ruin her life.

Because although Nicki is not guilty of murder, she is far from innocent . . .