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.
(..) See you tomorrow. Bye-bye. Mommy, I saw a boy out there run as fast as the train! Faster even! Lois Lane, you have a writer's gift for invention. -I'll say that for you. -But-- Lois, please read your book. No one ever believes me. Hey, look, there's Clark! (..)1978 Superman