Uploaded April 2026 | Updated September 2026, 2 weeks ago
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This true crime documentary covers the case of Kylee Monteiro, an 18-year-old from Attleboro, Massachusetts, whose disappearance in August 2025 quickly became a major investigation.
Kylee had recently graduated from Attleboro High School and was navigating a new chapter in her life. In the weeks leading up to August, she shared much of her journey on social media, giving a rare insight into her day-to-day life, relationships, and circumstances.
On August 7th, 2025, communication with Kylee suddenly stopped.
The last confirmed location places her at a property on County Street in Rehoboth, Massachusetts. What followed was a search effort involving local law enforcement, K9 units, and aerial support, as investigators worked to piece together a timeline of events.
This documentary carefully examines:
Kylee Monteiro’s background and life in Attleboro
Her relationship with Gregory Groom
The timeline of August 6th and August 7th, 2025
Key messages, movements, and last known location
The investigation in Rehoboth, Massachusetts
Statements, interviews, and developing accounts
The wider context surrounding the case
All information presented is based on publicly available reports, statements, and documented timelines. Any discussion of third parties is clearly identified where information is unconfirmed.
This video is intended for informational, entertainment and documentary purposes only.
If you are interested in true crime documentaries, missing person cases, and detailed timeline breakdowns, consider subscribing for more.
Please consider supporting my work on Patreon: patreon.com/darkcasedocumentaries
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DARK CASE DOCUMENTARIES brings you true crime documentaries, unsolved cases and investigates the deepest of mysteries. We take pride in creating respectful and informative true crime documentaries, as well as other content that arises from the darker side of the human race.
Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, commenting, news reporting, teaching, scholarship, and research.
Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use.
Great effort is made to ensure all materials in Dark Case Documentaries videos fall within the guidelines of fair use. No copyright infringement intended. If you are or represent the copyright owner of any material accidentally used in this video and have an issue with its use, please contact me. This video is made for informational purpose.
Dark Case Documentaries tries hard to ensure that all of the information shared in our content is correct and true to real life events. As we relay information that is found through the research of multiple resources we cannot hold responsibility for the accuracy of information given, although every care is given. Dark Case Documentaries is an entertainment channel and not a reliable resource and should not be used as such. Please get in touch if you want to discuss changes or redactions. Content expresses my opinions and that of the guests, not expertise.
AFFILILATE LINK DISCLAIMER: This description contains affiliate links. This means I may earn a commission should you choose to use my links.
#DARKCASE #TRUECRIME #DOCUMENTARY
Become a Dark Case Crew Channel Member (only 99p):
youtube.com/channel/UCUsE2vix9xcbgY7sJKLRZlw/join
This true crime documentary covers the case of Kylee Monteiro, an 18-year-old from Attleboro, Massachusetts, whose disappearance in August 2025 quickly became a major investigation.
Kylee had recently graduated from Attleboro High School and was navigating a new chapter in her life. In the weeks leading up to August, she shared much of her journey on social media, giving a rare insight into her day-to-day life, relationships, and circumstances.
On August 7th, 2025, communication with Kylee suddenly stopped.
The last confirmed location places her at a property on County Street in Rehoboth, Massachusetts. What followed was a search effort involving local law enforcement, K9 units, and aerial support, as investigators worked to piece together a timeline of events.
This documentary carefully examines:
Kylee Monteiro’s background and life in Attleboro
Her relationship with Gregory Groom
The timeline of August 6th and August 7th, 2025
Key messages, movements, and last known location
The investigation in Rehoboth, Massachusetts
Statements, interviews, and developing accounts
The wider context surrounding the case
All information presented is based on publicly available reports, statements, and documented timelines. Any discussion of third parties is clearly identified where information is unconfirmed.
This video is intended for informational, entertainment and documentary purposes only.
If you are interested in true crime documentaries, missing person cases, and detailed timeline breakdowns, consider subscribing for more.
Please consider supporting my work on Patreon: patreon.com/darkcasedocumentaries
🔴 HELPFUL TOOLS FOR YOUTUBE CREATORS 🔴
🖤 Remove copyrighted music & background noise from videos:
lalal.ai/?fp_ref=darkcasedocumentaries
🖤 Rank videos, get more views & grow your channel:
tubebuddy.com/darkcasedocumentaries
DARK CASE DOCUMENTARIES brings you true crime documentaries, unsolved cases and investigates the deepest of mysteries. We take pride in creating respectful and informative true crime documentaries, as well as other content that arises from the darker side of the human race.
Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, commenting, news reporting, teaching, scholarship, and research.
Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use.
Great effort is made to ensure all materials in Dark Case Documentaries videos fall within the guidelines of fair use. No copyright infringement intended. If you are or represent the copyright owner of any material accidentally used in this video and have an issue with its use, please contact me. This video is made for informational purpose.
Dark Case Documentaries tries hard to ensure that all of the information shared in our content is correct and true to real life events. As we relay information that is found through the research of multiple resources we cannot hold responsibility for the accuracy of information given, although every care is given. Dark Case Documentaries is an entertainment channel and not a reliable resource and should not be used as such. Please get in touch if you want to discuss changes or redactions. Content expresses my opinions and that of the guests, not expertise.
AFFILILATE LINK DISCLAIMER: This description contains affiliate links. This means I may earn a commission should you choose to use my links.
#DARKCASE #TRUECRIME #DOCUMENTARY
![The Inhumane True Crime Iceberg [Vol.1]](https://i.ytimg.com/vi/Dh135xdA5SU/mqdefault.jpg "The Inhumane True Crime Iceberg [Vol.1]
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This true crime iceberg starts bad but somehow only gets worse. Each case is worse than the last until we hit the darkest abyss of human activity.
Please consider supporting my work on Patreon: https://www.patreon.com/darkcasedocumentaries
🔴 HELPFUL TOOLS FOR YOUTUBE CREATORS 🔴
🖤 Remove copyrighted music & background noise from videos:
https://www.lalal.ai/?fp_ref=darkcasedocumentaries
🖤 Rank videos, get more views & grow your channel:
https://www.tubebuddy.com/darkcasedocumentaries
DARK CASE DOCUMENTARIES brings you true crime documentaries, unsolved cases and investigates the deepest of mysteries. We take pride in creating respectful and informative true crime documentaries, as well as other content that arises from the darker side of the human race.
Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for fair use for purposes such as criticism, commenting, news reporting, teaching, scholarship, and research.
Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use.
Great effort is made to ensure all materials in Dark Case Documentaries videos fall within the guidelines of fair use. No copyright infringement intended. If you are or represent the copyright owner of any material accidentally used in this video and have an issue with its use, please contact me. This video is made for informational purpose.
Dark Case Documentaries tries hard to ensure that all of the information shared in our content is correct and true to real life events. As we relay information that is found through the research of multiple resources we cannot hold responsibility for the accuracy of information given, although every care is given. Dark Case Documentaries is an entertainment channel and not a reliable resource and should not be used as such. Please get in touch if you want to discuss changes or redactions. Content expresses my opinions and that of the guests, not expertise.
AFFILILATE LINK DISCLAIMER: This description contains affiliate links. This means I may earn a commission should you choose to use my links.
#DARKCASE #TRUECRIME #DOCUMENTARY")
