10 Moments From "Anonymous" - Criminal Minds S10 E12

The BAU searches Tallahassee for a serial killer who calls the authorities to report the crimes prior to committing murder.

"Anonymous" - Criminal Minds S10 E12

The BAU searches Tallahassee for a serial killer who calls the authorities to report the crimes prior to committing murder. Also, as Rossi prepares for a weekend visit with his daughter, Joy, he receives startling news about the death of a comrade in Vietnam, on CRIMINAL MINDS, Wednesday, Jan. 21 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Series star Joe Mantegna, pictured with Shemar Moore, directed the episode. Photo: Cliff Lipson/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

"Anonymous" - Criminal Minds S10 E12

The BAU searches Tallahassee for a serial killer who calls the authorities to report the crimes prior to committing murder. Also, as Rossi prepares for a weekend visit with his daughter, Joy, he receives startling news about the death of a comrade in Vietnam, on CRIMINAL MINDS, Wednesday, Jan. 21 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Pictured: Kirsten Vangsness as Penelope Garcia. Photo: Cliff Lipson/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

"Anonymous" - Criminal Minds S10 E12

The BAU searches Tallahassee for a serial killer who calls the authorities to report the crimes prior to committing murder. Also, as Rossi prepares for a weekend visit with his daughter, Joy, he receives startling news about the death of a comrade in Vietnam, on CRIMINAL MINDS, Wednesday, Jan. 21 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Series star Joe Mantegna, pictured, directed the episode. Photo: Cliff Lipson/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

"Anonymous" - Criminal Minds S10 E12

The BAU searches Tallahassee for a serial killer who calls the authorities to report the crimes prior to committing murder. Also, as Rossi prepares for a weekend visit with his daughter, Joy, he receives startling news about the death of a comrade in Vietnam, on CRIMINAL MINDS, Wednesday, Jan. 21 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Series star Joe Mantegna, pictured, directed the episode. Photo: Cliff Lipson/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

"Anonymous" - Criminal Minds S10 E12

The BAU searches Tallahassee for a serial killer who calls the authorities to report the crimes prior to committing murder. Also, as Rossi prepares for a weekend visit with his daughter, Joy, he receives startling news about the death of a comrade in Vietnam, on CRIMINAL MINDS, Wednesday, Jan. 21 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Series star Joe Mantegna, pictured, directed the episode. Photo: Cliff Lipson/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

"Anonymous" - Criminal Minds S10 E12

The BAU searches Tallahassee for a serial killer who calls the authorities to report the crimes prior to committing murder. Also, as Rossi prepares for a weekend visit with his daughter, Joy, he receives startling news about the death of a comrade in Vietnam, on CRIMINAL MINDS, Wednesday, Jan. 21 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Series star Joe Mantegna, pictured, directed the episode. Photo: Cliff Lipson/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

"Anonymous" - Criminal Minds S10 E12

The BAU searches Tallahassee for a serial killer who calls the authorities to report the crimes prior to committing murder. Also, as Rossi prepares for a weekend visit with his daughter, Joy, he receives startling news about the death of a comrade in Vietnam, on CRIMINAL MINDS, Wednesday, Jan. 21 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Series star Joe Mantegna, pictured, directed the episode. Photo: Cliff Lipson/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

"Anonymous" - Criminal Minds S10 E12

The BAU searches Tallahassee for a serial killer who calls the authorities to report the crimes prior to committing murder. Also, as Rossi prepares for a weekend visit with his daughter, Joy, he receives startling news about the death of a comrade in Vietnam, on CRIMINAL MINDS, Wednesday, Jan. 21 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Pictured: Jennifer Love Hewitt as Kate Callahan, Matthew Gray Gubler as Dr. Spencer Reid. Photo: Cliff Lipson/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

"Anonymous" - Criminal Minds S10 E12

The BAU searches Tallahassee for a serial killer who calls the authorities to report the crimes prior to committing murder. Also, as Rossi prepares for a weekend visit with his daughter, Joy, he receives startling news about the death of a comrade in Vietnam, on CRIMINAL MINDS, Wednesday, Jan. 21 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Series star Joe Mantegna, pictured, directed the episode. Photo: Cliff Lipson/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

"Anonymous" - Criminal Minds S10 E12

The BAU searches Tallahassee for a serial killer who calls the authorities to report the crimes prior to committing murder. Also, as Rossi prepares for a weekend visit with his daughter, Joy, he receives startling news about the death of a comrade in Vietnam, on CRIMINAL MINDS, Wednesday, Jan. 21 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Series star Joe Mantegna, pictured, directed the episode. Photo: Cliff Lipson/CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved