The company's deal with the government has brought 'cries/accusations of foul play' [=claims that there have been unfair or dishonest acts] from its competitors.
She is still missing, and the police now suspect that she may have been a victim of 'foul play'. [=that she may have been murdered or harmed in some way]
After leaving school she 'fell foul of' the law. [=she got into trouble with the law; she was arrested for committing a crime]
(..) Dangerous! Cold! Stronger than one, Stronger than ten. Stronger than a hundred men! Born of cold and winter air And mountain rain combining. This icy force both Foul and Fair. Has a frozen heart worth mining. Cut through the heart, Cold and Clear. Strike for love and strike for fear. (..)2013 Frozen
(..) This icy force both foul and fair. Has a frozen heart worth mining. Cut through the heart, Cold and Clear. Strike for love And Strike for fear. See the beauty Sharp and Sheer. Split the ice apart. (..)2013 Frozen