Interesting movie with implausibilities and an unsatisfactory ending

Rating: 7/10 (26 March 2018)

A lot of very high reviews on imdb.com for this movie but it is not as good as it seems.
The storyline is interesting about a mother who rents three bilboards to put up texts in order to force the local police to come into action to investigate the death of het daughter closer.
The sheriff has cancer and has two little daughters but does not much about the case. His deputy Dixon is a real asshole and it is unreliable that he is not fired.
It is also very unreliable that he changes his attitude 180 degrees only because of the letter he receives after rhe suicide of the sheriff.
And than there is the violent ex-husband of the mother and this unpleasant man has a 19-year old good-looking but dumb girl on his side. Yeah, right...
The mother sets the police-station on fire and almost kills the deputy but the new sheriff does not even check het story although she is at the scene of the crime and the obvious suspect.
And than there is the more or less open ending, a phenomenon that you see more lately but what I absolutely dislike!
For me this movie was, after all the positive rating and talk about it, a disappointment.
An interesting movie with however too many implausibilities and an unsatisfactory more or less open ending.