Next they stop up the smokestacks of factories on the cities edge, then attack the factory in the middle of the night after the harmful emissions aren't cut. They will avoid hurting civillians where possible, but it is not their real concern. It is their disregard for people that makes them most dangerous. It started a week ago, and there are over 20 missing so far. There is no pattern to the abductions except that there are never any witnesses.
Children disappear from their houses, school yards, and walking on the street.
After the characters begin to investigate the first witness will come forward. Two small boys were walking home together from school when a shadowy cloaked figure stepped out of the alleyway and tried to grab them both. One child was grabbed and disappeared with the shadowman back into the alley, the other child got away. Police have already checked out the alley, it's a dead end with no other exits. Characters will have to be clever to catch this villain.