Ghost Gate: An Abyssinian device given to Ghost Hunters which resembles a claw, when attached to a Ghost it sucks the victim into the Abyss. It can also be placed on the ground to create a gate for Ghosts and Spirits to walk through. Ghost Gates are engraved with their respective Ghost Hunters ID and the ID of their partners. This is used to determine who captured who and how many. The statistics are then used in determining Angel Status. Very rarely a Mortal may end up in the Ghost Gate and find themselves in a rather unpleasant situation. Demons are not allowed through the Ghost Gate and very rarely are exceptions made.
Now, it may just be a result of tiredness, but that last sentence--the one I bolded--seems to be something of a foreshadow. Perhaps are heroes will have to attempt this?