Helen Makes Contact (S01E03)

The team is summoned to look into a bizarre incident where a lifeguard is swallowed by a Mosasaur at a swimming pool. Cutter realizes they’re facing a shifting Anomaly when the Mosasaur and the lifeguard's remains show up at a reservoir, while a cellar gets flooded and overrun by a Hesperornis. Meanwhile, the rest of the team discovers that Helen is alive on the other side of the Anomaly, prompting Cutter to venture through and confront the woman his wife has transformed into.