The women turn to one another for support when their friend and fellow maid Flora is brutally murdered at the home of her employers, Evelyn and Adrian Powell, at one of the largest society events of the year. Meanwhile, newcomer Marisol is hired to clean the home of Taylor and Michael Stappord, a newlywed couple with a complicated love history. But Marisol has ulterior motives and when someone she loves becomes wrapped up in Flora’s murder, she goes undercover to learn the truth.

After the people of Charleston defeat another alien attack with the help of new advanced weaponry, Tom is invited to meet with a powerful leader. While Hal wrestles with an invasive evil, Ben struggles with his identity and the notion of being human again. And Anne uncovers startling new information that puts everyone in jeopardy.

When a teenage girl is found dead, Walt and the team investigate ties to the illegal sale of prescription drugs. Meanwhile Henry reconnects with an old flame and Cady returns home.

With his personal and professional life crumbling around him, Don positions himself for a change of scenery. Meanwhile, Pete's life is falling apart as well, thanks to the meddling of Bob Benson.