Feb 13, 17, 05:09 PM
They skin zombies and then wear their faces over their own. They travel among them too, so I don't think the group last night was the Whisperers. I assumed it was that group of women Tara encountered.
Glenn was killed in issue 100, so we're somewhere in the 110-115 range. A season on the show usually encompasses about 16-18 issues.
To give you an idea of how much comic book story is left to be told, issue 164 comes out tomorrow.