"You mean Bob, the accountant, who was with you when the first murder happened and has rock solid alibis for the second?"
"...yes"
"ok. How do you explain those two things?"
"... nevermind "
Or like, "we think he's a shape shifter!"
"So remember in session 0 we established this is a modern day, no magic, realistic setting?"
"...no."
"Ok, well, we did, and it's in the setting document pinned in the channel. Shape shifters don't fall under realistic, modern day, no magic, so they don't exist in this game."
I was wondering for a quick minute there why you'd play in a physical channel before I remembered that not everyone is as privileged and lucky to play in person all the time.
Something like that. They found out the villains first name, which wasn't exactly uncommon. Asked a guard whether they new anyone by that name, and since they managed to be pretty charming, the guard was like, yeah sure, I know a dude with that first name. Wasn't even related to the story in any way. Just some dude.