Title: List of Criminal Minds episodes
Content:  Criminal Minds is a police procedural that debuted on CBS on September 22, 2005. The series follows a team of profilers from the FBI's Behavioral Analysis Unit (BAU) based in Quantico, Virginia. The BAU is part of the FBI National Center for the Analysis of Violent Crime. The show differs from many procedural dramas by focusing on profiling the criminal, called the unsub or "unknown subject", rather than the crime itself. The series follows special agents Dr. Spencer Reid, Jennifer "JJ" Jareau, Penelope Garcia, Emily Prentiss, David Rossi, Dr. Tara Lewis, Luke Alvez, and Matt Simmons as they try to profile the unsub. Other former characters are Elle Greenaway, Jason Gideon, Jordan Todd, Ashley Seaver, Dr. Alex Blake, Kate Callahan, Derek Morgan, Aaron Hotchner and Stephen Walker. On January 10, 2019, CBS renewed the series for a fifteenth and final season consisting of 10 episodes, which was held for mid-season. The season eventually premiered on January 8, 2020.
Title: Criminal Minds
Content:  the episode "Lauren" (season 6) to assist the team in finding SSA Emily Prentiss (Paget Brewster). Jennifer returns as a series regular in the season 7 premiere as a legitimate profiler and admits to helping fake Prentiss' death, much to dismay of her colleagues. In the 200th episode, JJ is kidnapped because of a secret mission she performed while at the Pentagon. At the end of season 10, JJ reveals she is pregnant with her second child and consults over the phone for the few episodes of season 11 before rejoining the team in the field in the episode "Target 
Title: Criminal Minds (franchise)
Content:  Criminal Minds which premiered on September 22, 2005 is set primarily at the BAU based in Quantico, Virginia, and focuses on profiling the criminal, called the unsub (unknown subject), rather than the actual crime itself. The focal point of the series follows a group of FBI profilers who set about catching various criminals through behavioral profiling. The plot focuses on the team working cases and the personal lives of the characters, depicting the hardened life and statutory requirements of a profiler.
Title: Criminal Minds
Content:  Criminal Minds is an American police procedural crime drama television series created and produced by Jeff Davis. The series premiered on CBS on September 22, 2005, and concluded on February 19, 2020. It follows a group of criminal profilers who work for the FBI as members of its Behavioral Analysis Unit (BAU), using behavioral analysis and profiling to investigate crimes and find the UnSub (Unknown Subject), the team's nickname for perpetrators. The show tells the story of the team as they work various cases, and tackle their personal struggles. The show's original main cast consisted of seven characters: Jason Gideon (Mandy Patinkin), Aaron Hotchner (Thomas Gibson), 
Title: 200 (Criminal Minds)
Content:  After being abducted at the end of the previous episode, JJ (A. J. Cook) wakes restrained. She recognizes her captor, who drugs her. In a flashback to the U.S. Operations Camp in Afghanistan in 2010, JJ meets with Section Chief Erin Strauss (Jayne Atkinson). JJ has been assigned to a task force that is looking for Osama bin Laden, and will interrogate female suspects without the brutality used on male suspects. JJ meets Mateo Cruz (Esai Morales); Michael Hastings (Tahmoh Penikett); and Tivon Askari (Faran Tahir), her interpreter. In the present day, the Behavioral Analysis Unit (BAU) learns of her disappearance and that she previously worked with their new Section Chief, Cruz, who is also missing. While looking through JJ’s old office, Rossi 
Title: Guilty of Mind
Content:  A gifted criminal profiler, Fang Mu was asked to assist the police in solving a bizarre campus serial killing. Working together with Police Captain Tai Wei, Fang Mu tries to crack down the murder cases, but he unknowingly gets embroiled in a battle of wits.
Title: Criminal Minds (South Korean TV series)
Content:  conferences. She has been the guardian of her orphaned niece Ha-eun since the deaths of her sister and brother-in-law. She is the equivalent of Jennifer "JJ" Jareau, portrayed by A.J Cook ; Go Yoon as Lee Han ; The resident genius and holder of two doctorate degrees, he is a profiler who often follows the team to the field to analyze the crime scene or the suspect's house for further clues. He is socially awkward and has a tendency to spout encyclopedic facts at the wrong time. He is the equivalent of Spencer Reid Ph.D., portrayed by Matthew Gray Gubler 
Title: Mindhunter (TV series)
Content:  Mindhunter revolves around FBI agents Holden Ford (Jonathan Groff) and Bill Tench (Holt McCallany), along with psychologist Wendy Carr (Anna Torv), who operate the FBI's Behavioral Science Unit within the Training Division at the FBI Academy in Quantico, Virginia. Together, they launched a research project to interview imprisoned serial killers to understand their psychology with the hope of applying this knowledge to solve ongoing cases. The first season takes place from 1977 to 1980, in the early days of criminal psychology and criminal profiling at the Federal Bureau of Investigation. Cameron Britton has a recurring role in this season as notorious serial killer Edmund Kemper, who is the first to assist Ford and Tench in understanding how a serial killer's mind works. Other notable serial killers featured in the first season include Montie Rissell played by Sam Strike, Jerry Brudos played 
Title: Criminal Minds (season 2)
Content:  The Mill Creek Killer, a serial killer competing against The Hollow Man for recognition for their crimes.  In the episode "Lessons Learned" Anthony Azizi guest-starred as Jamal Abaza, a Guantanamo Bay inmate who is a member of a terrorist organization called "Militant Islamic Society." Kevin Chapman guest-starred as FBI Agent Andrew Bingham, who aids the BAU in preventing an attempted bombing at a newly opened mall. In the episode "Sex, Birth, Death", Jessica Tuck guest-starred as Dr. Sarah Harris, a doctor who is desperate to help stop her son's homicidal urges and fantasies. In the episode "Profiler, Profiled", Erica Gimpel guest-starred as Sarah Morgan, Derek Morgan's elder sister.  In the episode "No Way Out", 
Title: Criminal Minds (season 6)
Content:   In the season premiere "The Longest Night", Tim Curry reprised his role as one of the series' most notorious criminals, Billy Flynn, also known as "The Prince of Darkness". Robert Davi reprised his role as Detective Adam Kurzbard, who led the investigation of the murders. In the episode "J.J.", Chris Marquette guest-starred as James Barrett, a man who abducted and attempted to murder Kate Joyce. In the episode "Remembrance of Things Past", Daniel J. Travanti guest-starred as Lee Mullens, a serial killer who suffers from Alzheimer's disease. In the episode "Compromising Positions", Craig Sheffer guest-starred as James Thomas, an impotent serial killer who murders married 

Question: criminal minds episode where jj becomes a profiler?
Answer: season seven premiere.
The season seven premiere.