u/BullfrogFront1152

Found the picture in a box full of frames from an estate sale. I didn’t notice the photo was still in the frame until I went through the box more at home. I went to go take the photo out of the frame and found this message on the back.
He says stuff like “with malice aforethought” and talk about tackling a woman in a basement????
I’m not really understanding the middle part of the message and what it really means?
and at the end he says “this *something?* cannot be used against me in court” so it seems like this is a confession of some sort?
I’m not too sure if this is the right kind of post for this subreddit but I thought I’d see if anyone else understood what this all meant ?