Imagine this – it’s a typical evening, and you’re at work. Your children are home, in the care of a man who has taken care of them numerous times. He loves the children, and has always been a reliable sitter. Your husband picks you up from work, and when you get home, your house is surrounded by police. You’re not allowed to see what’s going on, instead you’re stopped and told that there’s been a murder. You go to the police station, where you learn that it was your children that had been murdered; that the man who was left to care for them killed them in such a brutal manner that you would never be allowed to even see their bodies. This happened in 1973 when Elsie and Clive Ralph left David McGreavy to care for their three young children.