Catherine Shields is a social worker who visits Rachel Breckle over her son Archie Breckle's welfare after she is arrested for selling drugs, that Archie's father Jai Sharma planted on her. Rachel insists to Catherine that Jai planted the drugs on her to help him win custody of their son. Catherine advises Rachel that she should let Archie stay with Jai until the mater is resolved as she should be seen to being doing what's in Archie's best interests.