Today being World Book Day but the world being a very big place indeed, I shall endeavour to shrink the focus somewhat by linking to an interview in the Irish Times with one writer - she being Sophie Hannah:
In a sense, she embodies the apparent contradiction of a poet who also writes bestselling psychological thrillers. Friendly and bubbly before we sit down in the crypt-like surroundings of the Merrion Hotel's vaults to talk about her current novel, The Carrier, she is icily precise in her diction and choice of words once the interview begins. It's a matter of respect for the tools of her trade.
I'm not sure about 'icily' but 'precise' is precise, as is 'bubbly'. More here.