Betrayal: Dirty Secrets

What is the series about?

Betrayal: Dirty Secrets is a three-part true-crime docuseries that premiered on Hulu on August 4, 2026, making it the fourth installment of the acclaimed Betrayal franchise. The series turns its lens on Joel Kern, a retired Colorado Springs police officer whose concealed sexual affairs and alleged abuse of his professional authority ultimately tore apart his marriage and upended the lives of those closest to him. At its center is his ex-wife, Karoline Borega, who steps forward as the series primary witness and narrator, walking viewers through the slow, devastating unraveling of a life built on deception.

Unlike many entries in the true-crime genre, Dirty Secrets does not hinge on a murder or a formal criminal prosecution. Instead, it explores a different kind of betrayal: the exploitation of institutional trust, marital vows, and personal authority by someone sworn to uphold the law.

The Case

Joel Kern served as a police officer in Colorado Springs, Colorado. According to coverage surrounding the series, Kern led a carefully constructed double life, maintaining secret sexual affairs while using his position and the credibility that came with his badge to conceal his behavior from those around him, including his wife.

Karoline Borega's account, as presented across the three episodes, details the discovery of her ex-husband's hidden relationships, the institutional context that allowed his conduct to persist, and the personal fallout she experienced in the aftermath. The series also draws on internal affairs material and firsthand interviews to reconstruct both the breakdown of the marriage and the erosion of professional trust within the department.

Mainstream entertainment coverage framed the story as a double life and a sex scandal probe, and reporting confirmed that Kern became the subject of internal scrutiny following the exposure of his conduct. However, the available public record does not identify a formal criminal trial, a jury verdict, or a prison sentence in connection with his actions. He is described as a retired officer, and the investigation referenced in the series appears to be internal rather than criminal in nature.

The conduct depicted falls into the categories of sexual misconduct, sustained deception within a marriage, and abuse of professional authority. No felony conviction has been reported.

Production

Betrayal: Dirty Secrets is the fourth season of a franchise that has established itself as one of Hulu's signature true-crime properties, drawing directly from the source material and audience of the Betrayal podcast. A press release tied to the premiere confirmed the August 4, 2026 launch date and the three-episode structure of this installment.

The director of this season has not been publicly identified in available sources. Production secured access to internal affairs footage, lending the series a documentary credibility that goes beyond personal testimony alone. Combined with sit-down interviews featuring Karoline Borega and others connected to the case, the series constructs a layered portrait of how institutional environments can enable or obscure misconduct.

The official trailer was released on July 29, 2026, approximately one week before the premiere, and generated immediate attention from entertainment and true-crime audiences alike.

Reception

Early critical and audience response to Betrayal: Dirty Secrets has been largely positive. A television review described it as one of the franchise's most emotionally direct seasons, noting that it functions as a compelling standalone watch even for viewers unfamiliar with earlier installments. The emotional honesty of Karoline Borega's testimony has been cited as the series' most powerful element.

Sensational framing in entertainment coverage generated strong public curiosity ahead of and following the premiere. Podcast coverage of the series, including dedicated episodes on iHeart and Apple Podcasts, has expanded discussion of the case beyond traditional television audiences.

No verified IMDb rating or title ID for Betrayal: Dirty Secrets was available at the time of publication. The broader Betrayal franchise maintains a presence on Rotten Tomatoes, where earlier seasons established the series' reputation for intimate, character-driven storytelling within the true-crime format.

The Case Today

As of the series' premiere in August 2026, Joel Kern has not faced a reported criminal conviction in connection with the conduct depicted in Betrayal: Dirty Secrets. He is described in coverage as a retired Colorado Springs police officer. The internal affairs investigation referenced in the series has not been followed, in the public record, by formal prosecution.

Karoline Borega has emerged as an outspoken voice in coverage of the case, using the platform provided by the series to share her experience and draw attention to the ways in which professional authority can be weaponized within intimate relationships. Her willingness to go on record is central to what makes this season of Betrayal distinctive within the franchise.

Whether further legal or institutional developments follow the series' release remains to be seen. In the meantime, Betrayal: Dirty Secrets stands as a document of one woman's attempt to be believed, and one institution's complicated relationship with the conduct of its own.