In order to download free, you do need to subscribe your email address.  They don't flood you with other marketing emails.  You do have to act lightning fast when you get the email because these stay available free almost no time.  This one is short at 128 pages.

There's a bookclub on booklikes for these at http://booklikes.com/book-clubs/88/tor-monthly-free-ebook-science-fiction-and-fantasy   (TOR publishes mainly science fiction and fantasy genre books).  Publisher page for book.

(Guardian article linked in the headline above.)

Has anyone watched this, yet? 

I haven't but will have a look when I get home. I really liked the re-makes of And Then There Were None and Crooked House but I wasn't impressed with the newer re-makes of The Witness For The Prosecution or Ordeal by Innocence, and let's not even mention that Branagh disaster.

I am kinda hesitant about the new The ABC Murders.