I agree .. Mary would confront Erica first, get Erica to fess up and not be a snitch.
Izzie ... going on about surrogacy as a pro .. not mentioning her surrogate wanted to keep the kid and is only out the picture as she be no more. Not to mention she is not with the father any more and took drugs to deal with pain of moving which she needed to do to cope with the baby... oh what happened to that story line by the way is she now magically pain free?
Even after the kid kicked off about the boys going thru her stuff locking her self in the bedroom, the boys where still going thru her stuff and suggesting building a robot.. these geezers are real quick learners I vote they build Metal Mickie, hes been missing for while on ITV, maybe they can find him while fishing in the canal one epp.