 However, after hearing Kathy and Jane talking later, Bobby accidentally reveals to Kathy that he pushed Jane down the stairs, leaving Kathy shocked at his violent streak.Bobby starts a feud with Sharon's son, Dennis Rickman Jnr (Bleu Landau), which escalates when Bobby cruelly kills Dennis 's pet spider.Sharon tells Kathy that Bobby is evil and needs help, and Kathy tells Sharon that Bobby pushed Jane down the stairs, so Sharon decides she will report Bobby to the police about Lucy's killing but agrees to wait until after Christmas.