When a renowned, but greedy publisher, plots a murder to own a would-be hit manuscript,his bitter deputy plots two, but both meet their match in the aspiring author-who happens to be a WWII vet.

Hello FFF,
Thanks so much for the review.
I am also grateful for the links.

Hello FFF,
I am grateful for your review.
I very much appreciate your points and thanks for the links.

Hello, I'm really lost with this logline, I miss a clear main character, a clear goal, and a strong concept.
I can't be sure about the tone either, is it a black comedy (everyone wants to kill everybody else) or a serious thriller? Since the premise of a unknow author would be best seller book is highly unbelivable, this could works better in a black comedy. The only valuable manuscripts are the well known author's manuscripts.
I'm not sure about what you mean by "deputy" (maybe it's just me, I'm not an english native speaker).

You must make a creative decision: who is your main character? Then write the logline form his point of view.

Speaking about stolen manuscripts, I suggest you to check out theese links :

http://www.imdb.com/title/tt4058500/?ref_=nm_flmg_act_7

http://scriptshadow.net/screenplay-review-manuscript/

http://scriptshadow.net/screenplay-review-the-falling-man/

Yes,two.He plots to kill the publisher and the author.Thus,the publisher plots to kill the author
while the deputy plots to kill both to own the manuscript.

Two? Is that a typo or is he plotting two things..?

Two? Is that a typo or is he plotting two things..?

Many thanks for your review.I would have to do something about it

A logline should be written from the perspective of the lead character. I cannot tell from your logline who the lead character is because it keeps switching perspectives.