▁S cul ly ▁discuss ▁the ▁odd ▁behavior ▁of ▁the ▁ro aches , ▁with ▁S cul ly ▁hypoth es izing ▁that ▁the ▁ro aches ▁could ▁be ▁an ▁invas ive ▁species . ▁Inside ▁the ▁facility , ▁which ▁res emb les ▁a ▁typical ▁house , ▁Mul der ▁sees ▁the ▁walls ▁r ipp ling ▁and ▁is ▁quickly ▁surrounded ▁by ▁ro aches . ▁He ▁is ▁then ▁confront ed ▁by ▁Dr . ▁B amb i ▁Ber en baum ▁( Bob bie ▁Phill ips ), ▁a ▁research er ▁from ▁the ▁Department ▁of ▁Agricult ure ▁who ▁is ▁studying ▁co ck ro aches ▁to ▁develop ▁more ▁effective ▁methods ▁of ▁p est ▁control . ▁Ber en baum ▁has ▁great ▁interest ▁in ▁insect s ▁and , ▁incident ally , ▁bel ieves ▁that ▁some ▁U FO s ▁are ▁actually ▁insect ▁sw ar ms ▁flying ▁through ▁elect r ically ▁charged ▁air spaces . ▁Yet ▁another ▁death ▁occurs ▁in ▁Mul der ' s ▁hotel , ▁with ▁the ▁individual ▁being ▁found ▁covered ▁in ▁ro aches ▁that ▁quickly ▁fle e . ▁At ▁this ▁point , ▁Mul der ▁bel ieves ▁that ▁the ▁individual ▁simply ▁died ▁of ▁fright , ▁though ▁S cul ly ▁begins ▁to ▁wonder ▁what ▁is ▁going ▁on ▁and ▁dec ides ▁to ▁head ▁up ▁there ▁herself . ▁ ▁Mul der ▁brings ▁a ▁co ck ro ach ▁from ▁the ▁hotel ▁room ▁to ▁Ber en baum , ▁who ▁thinks ▁it ▁may ▁be ▁mechanical . ▁Mul der ▁then ▁vis its ▁the ▁nearby ▁Dr . ▁Ivan ov , ▁a ▁wheel ch air - bound ▁scient ist ▁who ▁works ▁on ▁insect - like ▁rob