This episode called Echoes felt like it could be a Dollhouse filler episode. It did reveal a place that Echo was at before her initial wipe but just felt like a filler. In this one there is a release of a chemical agent that starts to affect people on a school campus and the Dollhouse sends in their dolls to help in trying to find the chemical and contain it. However the affects of the chemical even spreads to the Dollhouse itself and affects the people there. Sound off on what you thought of this one.