No one—'present writer' included—thought the plan would work. [=no one, including me, thought the plan would work]
She is promoting her latest movie, which 'the present writer' has not yet seen. [=which I have not yet seen]
They identified the 'writer' of the mysterious letter.
(..) the peopIe of Genovia... and I couIdn't bear... to disappoint you again. WeII, as I said... I have faith in you. -I'm a writer. -Ah! I write soaps-- soap opera. Mm-hmm. Did you ever see (..)2001 The Princess Diaries