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Around the time these arrests were happening, agents were continuing to speak with another young man, someone TBI had hoped would become the linchpin to TBI's case, Zach's younger brother, Dylan Adams. In 2014, Dylan was incarcerated on a gun charge unrelated to the Holly Bobo case. During this time, investigators spoke to him at least six times over eight months.

Around the time these arrests were happening, agents were continuing to speak with another young man, someone TBI had hoped would become the linchpin to TBI's case, Zach's younger brother, Dylan Adams. In 2014, Dylan was incarcerated on a gun charge unrelated to the Holly Bobo case. During this time, investigators spoke to him at least six times over eight months.

Around the time these arrests were happening, agents were continuing to speak with another young man, someone TBI had hoped would become the linchpin to TBI's case, Zach's younger brother, Dylan Adams. In 2014, Dylan was incarcerated on a gun charge unrelated to the Holly Bobo case. During this time, investigators spoke to him at least six times over eight months.

Over the course of these interviews, Dylan appeared to implicate his brother, Zach Adams, and Jason Autry in the kidnapping and murder of Holly Bobo. Dylan's family says he has intellectual disabilities.

Over the course of these interviews, Dylan appeared to implicate his brother, Zach Adams, and Jason Autry in the kidnapping and murder of Holly Bobo. Dylan's family says he has intellectual disabilities.

Over the course of these interviews, Dylan appeared to implicate his brother, Zach Adams, and Jason Autry in the kidnapping and murder of Holly Bobo. Dylan's family says he has intellectual disabilities.

This is Cindy Adams, Dylan's mother.

This is Cindy Adams, Dylan's mother.

This is Cindy Adams, Dylan's mother.

Later, prosecutors would push back on Dylan's family's claims about his intellectual abilities. They pointed out that Dylan was able to drive and that he could read even if he had trouble. They said it's not like he needed a babysitter to help him all day.

Later, prosecutors would push back on Dylan's family's claims about his intellectual abilities. They pointed out that Dylan was able to drive and that he could read even if he had trouble. They said it's not like he needed a babysitter to help him all day.

Later, prosecutors would push back on Dylan's family's claims about his intellectual abilities. They pointed out that Dylan was able to drive and that he could read even if he had trouble. They said it's not like he needed a babysitter to help him all day.

According to TBI, in March of 2014, Zach told a fellow inmate heading to Dylan's jail to give his brother a message, quote, Tell my brother he is the one who started this expletive, and if you don't shut his mouth, he will be in the hole beside her. Then, the following August, according to court documents, Dylan was released from jail after pleading guilty to lesser federal charges.

According to TBI, in March of 2014, Zach told a fellow inmate heading to Dylan's jail to give his brother a message, quote, Tell my brother he is the one who started this expletive, and if you don't shut his mouth, he will be in the hole beside her. Then, the following August, according to court documents, Dylan was released from jail after pleading guilty to lesser federal charges.

According to TBI, in March of 2014, Zach told a fellow inmate heading to Dylan's jail to give his brother a message, quote, Tell my brother he is the one who started this expletive, and if you don't shut his mouth, he will be in the hole beside her. Then, the following August, according to court documents, Dylan was released from jail after pleading guilty to lesser federal charges.

Ten days after Holly's remains were found in September, TBI received a call. They were told that Dylan had just confessed to taking part in the kidnapping and murder of Holly Bobo.

Ten days after Holly's remains were found in September, TBI received a call. They were told that Dylan had just confessed to taking part in the kidnapping and murder of Holly Bobo.

Ten days after Holly's remains were found in September, TBI received a call. They were told that Dylan had just confessed to taking part in the kidnapping and murder of Holly Bobo.

In the video obtained by ABC News, Dylan is sitting across from TBI agent Brent Booth. Next to Dylan is TBI agent Jeff Jackson, just a couple feet away from him. The three are sitting in a small, brightly lit room around a table covered with papers and a couple of soda bottles. Dylan is slim with short, dark hair.

In the video obtained by ABC News, Dylan is sitting across from TBI agent Brent Booth. Next to Dylan is TBI agent Jeff Jackson, just a couple feet away from him. The three are sitting in a small, brightly lit room around a table covered with papers and a couple of soda bottles. Dylan is slim with short, dark hair.