Following the revelations at the dinner party, Rachel, Seema and Lauren turn detective to discover if Lystra could have sent the explosive messages that shook the Housewives or whether they were faked. Tanya heads back into isolation, Rachel goes steady and Nicole becomes frustrated with her place in the group. Meanwhile, as Hanna and Martin reach the 20th week of their pregnancy, everyone is excited to find out whether they are expecting a girl or a boy.