. . . - You hear somebody walking in a nearby corridor. They are pretty quiet... You can't tell what it is though... While you're walking you then hear something behind yourself and see a partygoer, they don't seem threatening but... They are a partygoer, and you were sure a party-pooper told you that they were dangerous...

Should you trust them or not?

Plan A: trust them for now and see what happens?

Plan B: Don't trust them and try to find the party-pooper you were with.