it’s quite obvious that the three of them know each other well. Stefano refers to her as "Madeline" and Kate called her Madeline, then referred to her maiden name (which I can’t recall) as well as her married name of Woods. It’s not quite clear to me yet, but I think their history goes way back to when Stefano was pimping Kate out. Could Madeline maybe have been in something like law enforcement back then and maybe busted Kate? I don’t know, but whatever it is, I have to say I enjoy stories like this that have us guessing from the very start. I’m thinking more and more that it won’t involve Chad, although I’m not counting out that he still could wind up being a DiMera.