I did a bad thing today. My kids were bugging me to find out who gets killed at the end of the book (one's reading it, the other one is in line to read it next). I told them that it was Gilderoy Lockhart who got killed, that he was a Death Eater all along, and had used his skill with memory charms to conceal that fact. I also told them that the other Death Eaters had conspired to spring him from St. Mungo's and had successfully broken the memory charms on him so that he could remember. When they asked me who killed him, I told them it was Neville.

Gee, ain't I a stinker?

Yes, they believed me.