Ep 15. The Big Chill

Cleo's father, Don, throws a surprise birthday party for her, inviting her friends and family to celebrate. However, trouble arises when a sudden cold front hits and freezes everyone in the pool. The girls realize that their powers are not working due to the cold, and Cleo's dad becomes suspicious of their behavior. Meanwhile, Lewis tries to find a way to reverse the effects of the cold and free everyone from their icy prison.

As the girls struggle to keep their secret from Don, they also have to deal with the challenges of being frozen and unable to move. Emma is trapped under the ice, and Rikki must use her body heat to try and free her. Cleo, who is still feeling guilty about keeping her secret from her father, tries to find a way to use her powers to thaw everyone out. But with the temperature continuing to drop, time is running out.

Lewis, determined to help his friends, begins to research ways to create warmth and reverse the effects of the cold. He comes up with an idea to create a sauna using old pipes and hot water, which surprisingly works. With the ice starting to melt, the girls are finally able to use their powers again and return everyone to their normal state.

However, Cleo soon discovers that her father saw her using her powers and confronts her about it. She tries to deny it, but eventually comes clean about everything. To her surprise, Don reveals that he has known about her secret all along and accepts her for who she is. The episode ends with the group celebrating Cleo's birthday, with Don joining in on the fun.

Overall, "The Big Chill" is a thrilling and heartwarming episode that highlights the importance of friendship and acceptance. The girls face a challenging situation, but with the help of their friends and their own abilities, they are able to overcome it and come out even stronger. It also shows that keeping secrets can cause more harm than good and that being honest is always the best policy.