The Lying Game follows long-lost twins Emma and Sutton. Separated under mysterious circumstances, Sutton was adopted by the wealthy Mercer family in Phoenix, while Emma grew up in the foster system. When the twins reunite as teenagers, they keep it secret. While Sutton goes in search of the truth, Emma takes over her life and discovers more secrets and lies than she imagined. It's a season of secrets, seduction, and life-and-death stakes as the twins continue to expose the skeletons in their family closet. Emma and Ethan's love is stronger than ever, but their relationship is tested by questionable motives and accusations; when Sutton disappears, they don't know if she's missing or dead. Meanwhile, Char's aunt Annie has returned to town after many years, bringing memories and secrets that Alec and Ted would like to keep in the past.