Sister Winifred learns about Poplar’s seedy underworld aftershe looks after Bridget Cole, an expectant prostitute. Shockedby the girl’s lack of awareness, she has to use her pastteaching experience and help from SGT Noakes in an effort topromote 'safe sex' to the local working girls. Barbara finds ithard to understand why expectant father, Frank Robbins, is sodesperate to have a son.
