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.

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Hello, today we're exploring literary legacies with the evergreen fingerprints of Agatha Christie on two recent novels and a lifelong transatlantic love of Roald Dahl.

But first, a debut novelist who's definitely set herself up for a stellar career.

Kylie Reid initially trained as an actress supporting herself

by working as a nanny for well-to-do New York families.

It's an experience that stood her in good stead when she embarked on such a fun age,

the novel that's storming the bestseller lists in the US

and looks set to do likewise here.

Like Leila Slimani's

lullaby, it focuses on the power imbalance between a wealthy woman and her domestic help

and the race and class fault lines that exposes. The novel opens with 25-year-old

part-time nanny Amira been called by her employers late at night to emergency babysit.

Taking precocious toddler Briar to a local grocery store to keep her occupied

results in drama when the security guard questions her relationship with the white baby in her care.

...