Keeping the Secret

S2 E10: When Evie attempts to retrieve her father's watch from the marina's waters, David sees her tail. He's determined to prove mermaids exist and places cameras in the water, leaving the mermaids trapped on land. Ondina and Erik narrowly escape being caught swimming on camera. Zac and the mermaids have to work out a way of convincing David to give up on his quest, while Evie and Sirena both wonder if it might be easier to tell the truth.