Slithering friends

I was out watering the tomato plants and saw this little guy working his way
out of the window well. Took several still shots as he climbed up the wall
and across the window and then had the brigh idea to turn the video on. I
missed the best part - at the very end of the video you see his/her
disappearing, but you you miss him finding the crack between the foundation
and the porch and slithering lickety split under the porch. Hummmm I wonder
where he is now?

I believe that he/she is a gray rat snake.