David McGreavy killed Elsie Urry’s children Paul Ralph, four, Dawn, two, and nine-month-old Samantha in their Worcester home in 1973.
Despite the horrendous crimes, McGreavy has been given the all clear for release by the Parole Board.
McGreavy, a family friend and lodger, then impaled their bodies on the spiked garden railings of a house in Gillam Street, Rainbow Hill.
He claimed he killed the children because one of them would not stop crying, and was sentenced to life for the murders.
The Parole Board confirmed that a panel directed his release following an oral hearing.