Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Detailed and suspenseful.

This is an excellent movie about a complicated and difficult case, told partially from the perspective of a young newspaper cartoonist who becomes fascinated with the case, which is based on the real life author of the book of the same title:Zodiac Unmasked: The Identity of America's Most Elusive Serial Killer Revealed. The recreations of the killings themselves are chilling and extremely well done, and the times are places captured perfectly. All the details of this long and complex case are well presented, and the gradual focus on the most likely suspect is well presented, as is the missteps and failures of law enforcement to collaborate effectively. A thoroughly enjoyable crime drama. The extra features are quite interesting too, including documentary interviews with some of the major players as well as one of the victims who survived.