Board Thread:General Discussion/@comment-4287993-20140617142301/@comment-5278765-20140617143426

Right. It's like Nicole, the paramedic, and Nurse Tyler. They weren't in a ton of episodes, but we got to know a little bit about them because they kept coming back. I think the problem that the showrunners have with that is that if they don't lock them in as series regulars, they have no way to be sure that they'll be able to get that actor to come back.