harry slater, played by michael elphick, is the younger brother of charlie slater (derek martin). dale hayes portrays harry in a flashback on 25 december 2018. it transpires that harry groomed his niece kat (jessie wallace) as a child and it is later revealed that he had raped her when she was 13 years old, thus making kat pregnant with their daughter zoe (michelle ryan) and dermott dolan (oisín stack). zoe is initially presented as kat's sister but she is in fact kat and harry's daughter. charlie didn't know the father was harry so he decided to raise zoe as his own daughter and kat had to become her sister. harry fled to spain soon after the incident and didn't reappear until the death of his sister violet - in 1988. after violet's funeral, harry quickly left again.