The Fox Nation series "The Fuhrman Diaries" is back for season seven with an all-new line-up of America’s most infamous crimes

Host Mark Fuhrman, a former LAPD detective and a Fox News crime expert, provides an insider's perspective on five of the nation’s biggest cases, including the Jonestown massacre and sitcom star-turned-sexual predator Bill Cosby.

Cosby — at one time considered by millions to be "America’s dad" — was revealed later to be a sex offender and a rapist after spending decades in the Hollywood limelight. 

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Fuhrman shares his own perspectives on Cosby in episode four.

"I learned that Cosby was not a well-liked person," the host shared. 

"Did he use his sense of humor to disarm people to get them to … be in a position where he can actually move in and drug them? I would say, yes."

"People described him as a mean and vicious businessman while others cautioned, ‘Don’t let him near any woman you care about.’"

Fuhrman suggested that Cosby's game was to build up a comedic facade in order to gain access to his victims.

"Cosby was not a well-liked person," Fox Nation host and former LAPD detective Mark Fuhrman reveals in the new season of "The Fuhrman Diaries." (Fox Nation)

"Cosby was not a well-liked person," Fox Nation host and former LAPD detective Mark Fuhrman reveals in the new season of "The Fuhrman Diaries." (Fox Nation)

"Did he use his sense of humor to disarm people to get them to … be in a position where he can actually move in and drug them?" Fuhrman pondered. 

"I would say, yes."

The new season of the series, now available for streaming, begins with the November 1978 Jonestown murder, which left 900 cult members dead in a murder-suicide massacre. 

Fuhrman tackles the age-old question: Could this have been prevented?

This image of Reverend Jim Jones and his wife, Marceline, was taken from a photo album left behind in the village of the dead in Jonestown, Guyana, during Reverend Jones' happier times. Jones led more than 900 members of his cult to a painful death. (Getty Images)

This image of Reverend Jim Jones and his wife, Marceline, was taken from a photo album left behind in the village of the dead in Jonestown, Guyana, during Reverend Jones' happier times. Jones led more than 900 members of his cult to a painful death. (Getty Images)

A lesser-known case follows in episode two that changed the tactics of police departments across the nation. 

The "Onion Field" case made an example of how officers can be easily overpowered — so why in modern times is law enforcement structure still lacking?

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Convicted serial killer Henry Lee Lucas, also known as "The Confession Killer," fessed up to more than 600 murders, but the Texas Rangers on the case were being lied to, most likely. Fuhrman questions Lucas' motives in episode three.

The final episode of the season zones in on New York City serial killer David Berkowitz, also known as the Son of Sam. 

Police officers escort accused (and ultimately convicted) serial killer David Berkowitz (left), known as the Son of Sam, into the 84th precinct station, New York, New York, Aug. 10, 1977. (Photo by Robert R. McElroy/Getty Images)

Police officers escort accused (and ultimately convicted) serial killer David Berkowitz (left), known as the Son of Sam, into the 84th precinct station, New York, New York, Aug. 10, 1977. (Photo by Robert R. McElroy/Getty Images)

The killer who confessed to murdering eight people spurred the largest manhunt in city history — but Fuhrman isn't too sure he acted alone.

Season seven of "The Fuhrman Diaries" is available now for streaming on Fox Nation.

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