OnThisDay in 1969 #Abel modeled on #writer #MarkHanerfeld debuted in #DCSpecial #comics #4 a year after #hisBrother #Cain was introduced as the host of #DCComics #HouseOfMystery next appears #theFollowingMonth taking over as #host of #HouseOfSecrets revived as a #HorrorComicsSeries #afterA3YearPause