. >> renee diaugustine-bower takes over running the movie theater that her grandfather, vincent, had than 40 years in berwick, pennsylvania. she's trying to do him proud, but that's not easy. first, there are a series of small repairs, including to an old jalopy of a furnace. then comes a cold night in october 2013, during the 7:00 p.m. showing of "despicable me 2," that really tests her mettle. >> i got a phone call from one of the girls saying that people are acting weird. we found out that there was a carbon-monoxide issue. >> it turns out the berwick did not have carbon-monoxide detectors. no law required the theater to have them, so they were never installed. and the cause of the accident -- pigeons had gotten trapped in a furnace pipe. >> my husband actually made it down here before i did, and i came right down, as well, and he had already done a quick sweep of the premises, and he about passed out, so i was like, "oh, my gosh! what is happening?" i was terrified. >> what was happening -- people falling out of the theater? >> some people had carbon-monoxide poisoning, and they