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 irony.

Steakknife.

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Hello, a bit premature, I know, but we're in carnival mood on today's open book.

Later I'll be checking out the rhythms of Brazilian literature.

And off the back of the success of the Harrogate Crime Festival,

I'll be finding out about the inaugural Harrogate History Festival.

But first we had for the exotic suburbs of Wolverhampton with the award-winning journalist Sattnam Sangira. Satnam's 2009 memoir described his rite of passage

as a young Sikh living in the heart of the black country. The boy in the topnot was shortlisted

for the Costa and the Penn Prize and won the Mind Book of the Year.

Marriage material marks his fiction debut and is a contemporary reworking of Arnold Bennett's classic The Old Wives' Tale.

Tracing three generations of a corner shop-owning Punjabi family,

it explores the family secrets and respective fortunes of two sisters.

Kamaljit, the dutiful conformist daughter,

and Surinda, a flighty rebel, as revealed by the book's narrator and Camaldit's son, Arjan Banga.

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