In Northern Ireland, from the late 70s to the early 90s, the IRA killed over 40 alleged informers.

But the man who often found, tortured and sometimes killed these people on behalf of the IRA

was himself an informer, a secret British army agent with the codename Stakeknife.

Who gets to play God? And why me? Why my family?

When lies are still being told to this day, who do you believe?

I wouldn't even know where to start.

And I'm with the IRA.

Steakknife.

Listen first on BBC Sounds.

BBC Sounds, music, radio, podcasts.

Last year, criminals stole 1.2 billion pounds from our bank accounts,

according to the industry body UK finance.

But that's just the tip of the iceberg.

The true scale of financial fraud is hard to put a figure on,

because as many as four out of five people who have been stung are too

embarrassed to report it. Fraud is an epidemic that's seemingly out of control. In this program,

we're looking at the psychology of fraud and asking, how do scammers trickers into handing

over thousands of pounds and can understanding their techniques give us a fighting chance. Well, Katie Warbeck

is the managing director of economic crime at UK finance, the voice of the British banking industry.

Now, Katie, the latest fraud figures for 2018 were out at the end of March. What do they tell us?

Well, as you say, 1.2 billion is the top figure. Within that, we split it into two

different types. I think the one that we're particularly focusing on probably here today is the

...