But its not just Al Pacino who follows this rule - a new study has revealed just how many enemies each of us may have.To get more news about the four evils, you can visit shine news official website.

According to a poll of 2,000 people, the average British person knows at least four ‘evil people'.

The study found 16 per cent think their next-door neighbour is a ‘nasty piece of work' and 12 per cent believe they have a ‘black-hearted' boss.A quarter of those surveyed said they knew that a work colleague was ‘truly evil' - so maybe it's time to dust off the old CV.

But it seems you can't even get away from the villains in your lives when at home - more than 10 per cent of people thought their own family were evil.

A massive 56 per cent of people in the study said one of their best friends' other pals was a ‘bad egg' who they actively try to avoid.

But it's not all bad news, for the average four ‘evil' people we all know, the study found there are also nine ‘good' and ‘true' people in our lives.

The study, commissioned by true crime channel Crime+Investigation to mark the return of its latest UK true crime commission Murdertown, found that 43 per cent of those polled said some people were ‘simply born bad', saying it was their ‘nature' rather than how they were brought up.Some 58 per cent said the bad people they know have lied to them, 57 per cent said they have gossiped behind their back, and almost 40 per cent said that person had made trouble in their friendship group.

When thinking about the bad people they know, more than a quarter said the person has cheated on their partner, 18 per cent think they are thieves and 15 per cent said the person always flirts with their own partner.

A total of 63 per cent of those surveyed admitted they probably have a dark side themselves, with more than half saying they would probably commit an evil act.

A spokesperson for A+E Networks UK, which owns the TV channel, said: ‘Through this study we uncovered fascinating insights into how we feel about people we live and work alongside.

‘Crime in particular can have a truly devastating and lasting impact on local communities as highlighted in our new series Murdertown.'And if you can't think of anyone in your life who is really evil, perhaps it might tell you something about your own malevolence...