It is our both lucky day, mine and hers. A common netcasting spider or stick spider (Deinopis subrufa), I believe, has been found in the garden in stand by mode. She builds elastic-like web to hunt her prey by throwing the web with four front legs and wrapping around it, as seen in Life in the Undergrowth. Like any other predators, patience is the key to the success.
And the wait is over. She eventually catches a common garden katydid (Caedicia simplex). I am not too sure that this is the most effective way for spiders. Because she also gets a piece of wood with it, it is not an instant food. She has to carefully get rid of that tweak without losing her reward on the ground and it takes a while. My guess is their silk does not have the sticky element like orb-weaving spiders. She hangs on with one hind leg while untangling her own net. But finally, she gets to the katydid and can enjoy her big meal.