"I'm not going to say who it was, but one of the six men in this room is a rapist."
Even if one man is, indeed, guilty (and we can't know that until an investigation has taken place), the other five men are forced to endure the accusing stares of their colleagues until it's cleared up.
Regards,
“I’m not going to say who it was, but one of the six men in this room is a rapist.”
You could still file suit over something like that, since there is the legal notion of “implicit defamation” that doesn’t require them to actually name you. It might not be the easiest case to make, but you have a shot at least.