Jane wants to become a nun so Baines sacks her and brings in stern German matron Greta Mueller, who is a tyrant and tells Sarah where Diana hid the Porsche. Tom cons Baines into making him the head of the Residents' Association and gets up a petition, which Baines thinks is to get rid of Diana, so he signs it. Actually it's to get rid of Greta, so he is forced to fire her and reinstate Jane. (thetvdb.com)