Detectives and prosecutors revisit their most challenging homicide cases in this chilling true-crime docuseries.

“Kill or Be Killed” reveals the stories of those who lost their lives at the hands of someone they knew, who then claimed it was self-defense. In these complex cases, the lines between murder and justifiable homicide are blurred, making them some of the hardest cases to solve. When the killer is the best and sometimes only witness, investigators must scrutinize every other detail. Law enforcement, prosecutors and defense attorneys unravel every detail, from the harrowing stories, forensics, interrogations and witness statements that led up to the gruesome event in order to find answers.

Follow gymnast Simone Biles as she balances her personal life, mental health journey and training ahead of a highly anticipated return to the Olympics.

Follow Gordon Ramsay as he meets with indigenous people around the globe to learn about the cultures, dishes and flavors unique to each location. Each episode concludes with Ramsay challenging himself with a local food legend by his side – putting his newfound skills to the test as they cook a feast together for the natives.

Louis immerses himself in the world of Ohio’s state psychiatric hospitals, meeting patients who have committed crimes – at times horrifically violent – while in the grip of severe mental illness.

Fueled by passion and NASCAR Cup glory, drivers and their teams compete for the championship and the chance to make history in this sports docuseries.

Award-winning actor and nervous explorer Eugene Levy steps out of his comfort zone for a whirlwind tour of the world’s most beautiful and intriguing destinations.

Documentary series investigating why some of the world’s most advanced architectural achievements were abandoned.

Investigating a murder is hard enough. But when detectives realize the killer knows how to stage a crime scene to throw them off, the job gets even more difficult. They’re hunting down criminals who are sworn to protect and serve — killers with a badge.

Exploring the vital role colour plays in the daily lives of many species.

Looking at the lives of former and current football players, the show follows former superstar Spencer Strasmore as he gets his life on track in retirement while mentoring other current and former players through the daily grind of the business of football.

From the 2014 seizure of Crimea to the invasion of Ukraine, this is the inside story of a decade of clashes – as told by the Western leaders who traded blows with Putin’s Russia.