A new tough inmate, Pat Kerrigan is transferred to Larkhall from another prison and she's more than a match for Natalie. However, the focus of Pat's attention is the saintly Sister Thomas Moore. Sylvia fears that she could lose Malcolm if she doesn't tell him the truth about her aunt's will, they go ahead with the wedding. Neil has sex with Sylvia's son Bobby Darren. Natalie reveals Arun's secret.