you were at pizzeria, you heard child scream for moment, you got curious, you got crowbar and went to check where sound was from, you opened door with sign 'employees only', you saw purple man, covered in blood with knife, in front of him was child, he noticed you and started panicking.

"Don't.say.a.word...."

he was serious, you didn't knew what to say, what will you do? Leave? Or maybe call someone for help?