Title of the article makes u think there might be something more than meets the eye,but actually it seems pretty straightforward. He died in his sleep. No conspiracy. No murder. No nothing.
https://www.washingtonpost.com/politics/texas-tv-station-scalia-died-of-a-heart-attack/2016/02/14/938e2170-d332-11e5-9823-02b905009f99_story.html