During a full moon, the girls stay at Cleo's and Bella is attacked by the water creature. At the same time, Will decides to return to the moon pool after making the connection between his previous encounter with the moon pool waterfall and the timing of the full moon.
Elenco: Cariba Heine , Phoebe Tonkin , Angus McLaren , Cleo Massey , Burgess Abernethy , Indiana Evans , Alan David Lee , Jamie Timony , Luke Mitchell , Craig Horner , Taryn Marler , Trent Sullivan , Caroline Kennison .