The series portrays the relationship between Devon and Simone as complex and multifaceted. They are sisters who navigate their lives amidst the intrigue and mystery of the island setting. Their interactions are often tense and emotionally charged, reflecting their deep-seated bond and conflicts. The characters are well-developed, with each sister bringing her own distinct personality to the narrative.

Julianne Moore plays a character named Michaela, although some reviews mistakenly refer to her as Kiki. Her character is described as ethereal and manipulative, adding layers to the unfolding narrative. Moore's performance is captivating, embodying an air of mystery that keeps viewers engaged.

The series delves into themes of power and identity by exploring the dynamics among the characters, particularly the female characters. It examines how these themes play out in the context of wealth and social status, often highlighting the complexities and tensions that arise from these relationships.

The island setting provides an eerie and suspenseful backdrop for the series. It helps to build tension and intrigue, creating an atmosphere that keeps viewers engaged. The isolation of the island heightens the sense of mystery and confinement, contributing to the overall suspenseful tone of the narrative.

While some reviews suggest that the series initially seems like a dysfunctional comedy, it ultimately delves deeper into mystery and suspense. The balance between these elements is maintained through well-crafted storytelling and pacing, although some critics argue that the dark comedy label doesn't fully fit the series.