................ 's what Canadian police have dubbed Melissa Ann Shepard ... an outwardly "sweet - butter wouldn't melt in her mouth" - octogenarian!

And elderly men, s looking for ... are being urged to BEWARE!

... WHY?

Because of this:

www.bbc.co.uk/news/magazine-35838340 ...

Apparently not long released from prison ... ... could she be Canada's most dangerous woman?

Scary !