英国伦敦某个高档社区，事业有成、生活优渥的迈克（汤姆·布彻 Tom Butcher 饰）和妻子克莉斯蒂安（蕾切尔·布雷克 Rachael Blake 饰）正在进行着不甚愉快的晚餐，夫妻二人语露锋芒，相互讥讽和试探，气氛分外尴尬。正在这时，三名不速之客破门而入，将二人捆绑起来。原来他们的儿子塞巴斯第安（汤姆·凯恩 Tom Kane 饰）在外惹出麻烦，致使泰迪（桑尼·穆斯林 Sonny Muslim 饰）、奥塞德（Ashley Chin 饰）和瑞恩（Jumayn Hunter 饰）冲入他的家中，守株待兔。　　时间在煎熬中缓缓流逝，青年们蛮横无理，恣意妄为。更令迈克夫妇担忧的是，他们的儿子随时会惨遭毒手。一切开始朝着不可预测的方向发展……

Written by Daragh Carville (Being Human), the third season introduces us to Lisa Armstrong’s replacement, DS Jenn Townsend, who struggles to balance her family’s house move alongside the pressures of her new role. 　　DS Townsend is immediately thrown into the deep end when a body is found in the bay on her first day in the job. She must get under the skin of a grieving and complic...