praying mantis on the window pane (inside!)

So--I had just pulled these dahlias together in this vase and was about to photograph them when I realized there was an insect on the window pane--a young praying mantis! I must have brought him (her?) inside with the flowers. So beautiful. If you look hard, you'll see his slender body framed by the storm window handle, just above the rim of the vase on the right.

And here's a photo of the mantis up close. Looks like he's on the screen, but he was actually on the glass window pane, inside.