When a new anomaly opens it brings a worm like creatures that bring with them their atmosphere which is based on sulfur. Unfortunately since it looked that an office building was in fire the fire fighters was called first.When a fire alarm get's activated ,everyone leaves out except a few employees in a conference hall. When a chief fire fighter who arrives first is killed,a second firefighter is left alone to fight the creatures. When Nick and Stephen arrive, Jenny is persistent to know what is happening but they brush her off saying it is her job to keep everyone out. But after Nick warned her not to use elevator but only steps, she replies to herself "in these heels" and of course disobeys him. Aldo the worm like creature looked really repulsive, their technique was to suck their pray through mouth, like snake. When Stephen killed the first creature and saved the firefighter that was excellent. In later scenes he jumped from table to table trying to get away, but again the best action scenes went to Nick who saved Jenny from being eaten. Connor arrives at the scene, just to look stupid. I must admit it was interesting to see how they all battled the creatures with everything that literally get into their hands. Of course what I liked the best was the solution of how to get rid of the worms. Loking back this episode had more face to face action than any other.