ronald jebson , who was responsible for the ` babes in the woods ' killings , died of kidney failure almost a fortnight ago .
jebson 's final wish was for his death to be secret and victims ' families only found out after journalists told them 11 days after he died .
beryl hanlon , whose 12-year-old son gary was killed together with his 11-year-old friend susan blatchford in 1970 , sobbed .