Examples:

• Let's watch Foul Play again.
• Are we absolutely sure that there was no foul play?
• All I know is there were signs of foul play.
• Other than a couple of empty suitcases, there's no sign of foul play.
• There's no evidence of foul play, so the detective just closed the case.
• Well, that's gonna be tough, considering there's no sign of foul play.
• The police have no evidence of foul play.
• Because there was no evidence of foul play.
• No, there was no sign of foul play.
• No sign of foul play, and the tenant, Nellie Carr, she isn't there.