Finnish movie

Today in the class we watched a finnish movie,there are not so much finnish movies and since they are all speaking finnish,it is difficult for people who do not understand finnish to watch it.
Well,I have to say it is quite difficult for me still.They speak quite fast in the movie and no subtitles neither in English nor Finnish nor Chinese.I have to listen carefully what are they all talking about. The movie is called "Kaasua,komisario Palmu!" means "Gas,detective Palmu!" it is based on a famous finnish writer Mika walteri's novel "Kuka murhasi Rouva Skrofin" means "Who murdered Ms.Skrofin". A detective story with a funny detective. It got quite high rate in the movie database,well since I do not really understand all of the movie,I can not judge it now.
But since I am studying finnish now,it is quite interesting for me to watch this kinda movie,also I like watching movies very much!
Here is one link for this movie in the IMDB Kaasua,Komisario Palmu