Best true crime documentary series

For those fascinated by cults and their leaders, this series offers a rare inside look at a modern-day religious sect and its controversial figure. It provides a unique perspective through the infiltration efforts of a cult expert.

This highly anticipated fourth installment of the 'Monster' anthology series promises to delve into the psychological and societal aspects of the infamous Lizzie Borden case. Its focus on a historically sensational and unsolved mystery makes it a compelling addition to the true crime genre.

This documentary offers a timely and in-depth look into the recent and deeply disturbing case of Lucy Letby, a former neonatal nurse convicted of murdering infants. Its inclusion of new footage and victim interviews provides a compelling and current true crime narrative.

This Danish series offers a unique and emotionally resonant perspective on true crime by focusing on the profound betrayal within a close-knit community. It highlights the psychological aftermath when a perpetrator is known personally to the victims' friends.

This series provides a procedural and human-centered approach to true crime, focusing on a dedicated detective re-examining long-standing missing persons cold cases. It highlights the ongoing search for answers and the impact on families.

This gripping docuseries explores the dark side of adolescent friendships and betrayal, using social media and personal accounts to reconstruct a tragic murder. It offers a modern perspective on true crime, highlighting the digital age's role.

This docuseries addresses the highly relevant and contemporary issue of cybercrime and online privacy violations. It highlights the emotional and legal challenges faced by victims in the digital age, making it a timely and impactful watch.

This series presents a compelling and ethically complex personal true crime narrative, moving beyond typical investigative formats. It explores a unique dilemma when a forensic pathologist discovers her fiancé's dark past.

This docuseries delves into a chilling and controversial case involving explosive familial accusations and a desperate search for truth. It blends personal testimony with conflicting accounts, creating a complex and intriguing narrative.

As a recent entry in a popular true crime anthology, this series appeals to those fascinated by the more macabre and psychologically complex cases. It explores the disturbing and gruesome aspects of Ed Gein's crimes.

Despite its 2025 release, this series remains highly relevant due to its emotional and investigative account of a widely publicized case. It offers a poignant look at the tragedy through the eyes of Gabby Petito's loved ones.

This series offers a fresh and critical perspective on the landmark O.J. Simpson case, reframing it as a cultural rupture that exposed systemic failures. It highlights the enduring relevance of the case to contemporary societal issues.

This documentary takes a familiar cyberbullying premise and adds a shocking twist, exploring the devastating impact of hidden abuse. It's an unforgettable story that delves into the complexities of online deception and its real-world consequences.

This documentary offers a compelling exploration of how perception, power, and credibility shape justice in a complex family tragedy. It meticulously unpacks contradictions between testimony and forensic evidence, making for an intriguing watch.

This Korean mystery-thriller offers a dark, twisted, and suspenseful crime drama with plenty of plot twists. It appeals to fans of international thrillers and provides a unique take on the true crime genre with its intriguing premise.

This Spanish crime thriller offers a procedural mystery with added grit, suspense, and psychological depth. Its intriguing premise of a ritualistic murder forcing a disgraced inspector back into duty makes it a compelling watch.