'A standout thriller... A stunning murder mystery... The suspense is expertly handled' Independent'Tense and disturbing' ObserverSelected as a Best Crime Novel of the Month by The Times, Sunday Times, Independent, Guardian, Observer, Financial Times and Irish Times.They already know who killed the men. What they don't know is why.When three young students are brutally murdered in a Nigerian university town, their killings - and their killers - are caught on social media. The world knows who mur ...