If the strangers followed him now, someone would die.
Then the strangers followed their lead and rushed forward.
The stranger could as easily follow the man to the car and blow his brains out.
He did not look around; he knew the stranger was following him.
When you do find people who know their way around it's notoriously difficult to translate the perfectly familiar into terms a stranger can follow.
The stranger was not following a straight course.
The stranger left a purse upon the table, and followed Comus.
When he got out, the strangers debarked too, and evidently followed him, though, as yet, we have no details.
Without looking back to see if the strangers were following, the three People of Beauty set off toward a nearby hill.
Frank and Joe kept glancing back, but the hostile stranger did not follow.