We all have biases that affect our decision-making, but how would you feel if your decision led to an innocent person being imprisoned? We like to think that we couldn’t be convicted of a crime we didn’t commit but the evidence says otherwise. Research shows that everyday biases can have grave consequences in the criminal justice system. Even experienced police officers and forensic experts can make errors that ruin people’s lives. Dr Faye Skelton (Edinburgh Napier University) explores how miscarriages of justice arise and the impact on those affected.