“We arrested a serial bank robber then arranged a line up. We had all the tellers and witnesses in to view the line up.

“I then proceeded to have them turn around and step forward. I asked each of the men to repeat the same phrase. When we got to number five, instead of saying what I asked him to say, he said, ‘I didn’t say that!’

Needless to say, he was identified as the perpetrator of several bank robberies.”