Freeform公布10集新剧《诡媚海妖 Siren》（前名《深海 The Deep》，电视台改名后首部试映集）定档18年，该剧由Eric Wald及Dean White负责编剧，《诡媚海妖》背景设定在Bristol Cove，这个海滨小镇因被称为传说中的美人鱼栖息地而 闻名；而当一个神秘女孩的出现，证明传说都是事实﹑并且美人鱼要重夺海洋后，一场人类及海洋之间的战争即将要展开。
Alex Roe饰演Ben，聪明的海洋生物学家，他被镇上新出现﹑有着黑暗秘密的神秘女孩Ryn（Eline Powell饰）所吸引﹑Fola Evans-Akingbola饰演Maddie，跟Ben一同工作的海洋生物学家，对Ryn抱有高度怀疑。Ian Verdun饰演深海渔民Xander，他希望能找出真相﹑Rena Owen饰演镇里的怪人Helen，看似比其他人更清楚理解美人鱼的传说。Sibongile Mlambo饰演神秘﹑有强大迷惑力的美人鱼Donna。
Scott Stewart负责执导﹑Eric Wald﹑Dean White﹑Brad Luff﹑Nate Hopper及RD Robb当执行制片，Emily Whitesell当制作人。

We always knew they were coming back. Using recovered alien technology, the nations of Earth have collaborated on an immense defense program to protect the planet. But nothing can prepare us for the aliens’ advanced and unprecedented force. Only the ingenuity of a few brave men and women can bring our world back from the brink of extinction.

When the Emperor of China issues a decree that one man per family must serve in the Imperial Chinese Army to defend the country from Huns, Hua Mulan, the eldest daughter of an honored warrior, steps in to take the place of her ailing father. She is spirited, determined and quick on her feet. Disguised as a man by the name of Hua Jun, she is tested every step of the way and must harness her innermost strength and embrace her true potential.