In an effort to save Hope, Ryn and Ben confront Tia in an undersea battle between the mermaid tribes; Maddie and Robb work to find a cure for Xander; Helen and the hybrids help restore order.
Episode rating
Cast of episode
72
21
3
2
1
- Ryn
- Ben Pownall
- Xander McClure
- Maddie Bishop
- Helen Hawkins
- Robb Wellens
- Donna
- Levi
- Tia
- Calvin Lee
- Ted Pownall
- Elaine Pownall
- Mate
- Beth Marzdan
- Rick Marzdan
- Deputy Marissa Staub
- Jerry
- Hope
- Commander Anderson
- Lieutenant Maeda
- Leena
- Cable News Anchor
- News Anchor
- Reporter #3
- Black Ops Commander
- Elderly Man
- Victim #1
- Teenage Son
- Port Angeles Police Chief
- Deputy