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。
Jim Phelps is the new leader of the Impossible Missions Force, with no explanation, or even reference made, about the departure of predecessor Dan Briggs. First up for Phelps is a mission involving the drug trade. Cresnik and Walters have cornered the heroin market and sell it at a handsome profit to gangs around the world. Phelps devises an operation which will drive a wedge between the heroin dealers and their customers.
When a boat carrying illegal passengers is found crashed in the Thames, the team investigate.
