The Sinner: Season 4

Season overview

Task: Create a JSON object for "The Sinner" Season 4.
Keys: overview (160-220 words), primer (array of exactly 4 concise bullet points).
Constraints: Use ONLY provided synopsis and sources. No invented facts. No markdown/asterisks/headings/bullets in the text (except the array structure for the primer). Output valid JSON only.
Target: Season 4.
TMDB Season Synopsis: Harry Ambrose is retired, reeling from trauma of a case a year ago. He travels to Hanover Island, northern Maine, for a getaway with partner Sonya. An unexpected tragedy occurs involving Percy Muldoon, daughter of a prominent island family. Ambrose is recruited to help the investigation. He is thrown into a mystery of mounting paranoia that affects the island and his life.
Source [1]: General overview: "Her sins will drown them all." In a small New York town, a haunted detective hunts for answers about perplexing crimes while wrestling...
Source [2]: Created by Derek Simonds. Stars Bill Pullman, Jessica Hecht, Dohn Norwood, Adam LeFevre. Detective Ambrose uses unusual tactics and empathy. Driven by a dark past.
Source [3]: Detective hunts for answers about perplexing crimes while wrestling with his own demons in a small New York town.
Source [4]: American anthology crime drama mystery series. First season based on Petra Hammesfahr novel.
Source [5]: Irrelevant (about "The Girls On The Bus").
Overview:
Harry Ambrose, a detective who has retired following the trauma of a case from one year prior, travels to Hanover Island in northern Maine. He is accompanied by his partner, Sonya, seeking a recuperative getaway. However, the peaceful trip is interrupted when an unexpected tragedy occurs involving Percy Muldoon, who is the daughter of a prominent family on the island. Despite his retirement, Ambrose is recruited to assist with the investigation into the incident. This involvement pulls him into a mystery characterized by mounting paranoia. The investigation begins to impact both the sleepy tourist island and Ambrose's own life, turning things upside down. As he delves into the case, the situation evolves into a complex mystery that challenges his stability. Ambrose, known for his deep capacity for empathy and unusual tactics, must navigate the intricacies of the local community and the specific circumstances surrounding the Muldoon family. The narrative explores the consequences of the tragedy and the psychological toll it takes on those involved, including the detective himself as he faces the mounting tensions on Hanover Island.
Word Count Check:
"Harry Ambrose, a detective who has retired following the trauma of a case from one year prior, travels