In the second programme of this series we discover how difficult it is for witnesses to identify suspects.

When bystanders get caught up in a bungled armed robbery and one of them is kidnapped, what effect do weapons and fear have on their memories? High tech eye tracker cameras allow us to compare what witnesses remember from the crime with what they actually saw. The difference between recall and recognition is illustrated by witnesses who can't describe suspects they clearly saw, yet recognise suspects they can't describe.