Smart answer:

Your search for Who wrote Odd Thomas returned the following results:

Dean Koontz’s character,

Dean Koontz’s character, Odd Thomas, said it better than I ever could, Usually I spare myself from the news, because if it’s not propaganda, then it’s one threat or another exaggerated to the point of absurdity, or it’s the tragedy of storm-quake-tsunami, of bigotry and oppression misnamed justice, of hatred passed off as righteousness and honor called dishonorable, all jammed in around advertisements in which a gecko sells insurance

Source:

off a series of novels by Dean Koontz

Odd Thomas is based off a series of novels by Dean Koontz and incorporates elements that make the movie feel similar to that of a book, with voiced-over inner monologues of Thomas’s thoughts included throughout the film.

Source:

on the first of a series of books by Dean Koontz

The film, Odd Thomas, was based on the first of a series of books by Dean Koontz.

Source:

based on Dean Koontz’s book, and starring Anton Yelchin

Odd Thomas, based on Dean Koontz’s book, and starring Anton Yelchin… this is one of the ones I am really looking forward to, as the ones looks like the ones could be a lot of fun.

Source:

authored by none other than the paranormally-obsessed, prolific Mr. Dean Koontz

(If you must know, the book is ‘Odd Thomas’, authored by none other than the paranormally-obsessed, prolific Mr. Dean Koontz).

Source:

the adaptation of Dean Koontz’s novel starring Anton Yelchin, on Netflix

I was watching Odd Thomas, the adaptation of Dean Koontz’s novel starring Anton Yelchin, on Netflix and realised I haven’t read a Koontz novel in years.

Source:

an original Odd Thomas graphic novel written by Walker with series creator Dean Koontz

In 2012 Del Rey released an original Odd Thomas graphic novel written by Walker with series creator Dean Koontz.

Source:

a book titled Odd Thomas

Back in 2003, Dean Koontz published a book titled Odd Thomas.

Source:

In the original novel that drove a series of bestsellers

In the original novel that drove a series of bestsellers, Odd Thomas is a humble soul distinctly lacking in what many would consider ambition.

Source:

In the first book

In the first book, "Odd Thomas," we are introduced to the dynamic character of Odd, the young fry-cook that can see dead people.

Source: