HelenFerguson,pregnant,pennilessanddumpedbyherboyfriendSteveMorley,takestheidentityofthepregnantPatriceHarkness,whensheandherhusbandarekilledinatraincrash.TherichHarknessin-laws,andtheirothersonBill,hadneverseenPatrice,sotheyacceptherandhernewbornsonintotheirfamily.HoweverSteveeventuallyfindsherandstartstoblackmailher.