Now that many of the leaves have dropped, we can see our beautiful, but lethal, galaxies of Asiatic Bittersweet (Celastrus orbiculatus), sometimes known as Oriental Bittersweet.
This silent assassin has been growing quickly under cover all summer. The trees and bushes that are its prey are helpless as this Bittersweet squeezes them to death like a python winding higher and higher toward their tops.
As you can see from the October 24 images here, this is the time that many of the red fruits are emerging from their yellow skins, making themselves available to hungry birds. The droppings of those birds, in turn, propagate the plant faster than humans can eradicate it.
The State of Maine has acknowledged that this nuisance is too far-gone to be eliminated. But, the State has listed it as an invasive species that may not be encouraged or sold or distributed here for wreathes or other decorative purposes.
There is an innocuous native version of this plant, aptly named American Bittersweet (Celastrus scandens). Its leaves are elliptical, not rounded, and its flowers and fruit occur in clumps at the end of the stems like pendants, rather than being strung along the stem like a pearl neckless. (Brooklin, Maine) See also the image in the first Comment space.