The story is taking revenge by mother for her daughters killing. Her styles of sticking three billboards of accused is looks unique, but actual revenge drama missed thrill at all. For final climax you have to wait more time. Moreover end is not right for such revenge story. What is in such end ? I don't understand. I also wonder about high ratings whereas there are many good revenge movies to name like ' Peppermint' of Jenifer Garner etc. If you wish to best revenge then must see Peppermint and avoid Three billboards instead for boring drama. 4 stars is enough.