Edge of Tomorrow is based upon Hiroshi Sakurazaka book All You Need Is Kill, from 2004 and it's a shame that the movie did not retain that title. Edge of Tomorrow is a somewhat bland and generic moniker. Mercifully the film itself is a cut above your usual blockbuster Sci-fi release. The screenplay written by Christopher McQuarrie (The Usual Suspects) and Jez Butterworth (Jerusalem) offers a tight and gripping narrative which quickly establishes its premise and makes it continuously engaging.  Dubbed "Groundhog D-Day" by certain pundits, the story of history repeating itself is presented in such a fashion as to be intriguing rather than repetitive.