601: The Longest Night, Pt. 2Tue, May 16 10|9cPM
The BAU team closes in on the serial killer as he continues his murder spree throughout Los Angeles ” with "Detective Spicer's kidnapped daughter as his hostage. Tim Curry ("The Rocky Horror Picture Show") returns as serial killer "Billy Flynn and Robert Davi ("Profiler") reprises his role as "Detective Adam Kurzbard.
602: "jj"Mon, May 22 1|12cPM
While "JJ attempts to reunite a family whose daughter has mysteriously disappeared, her BAU family braces for the loss of one of their own. Gil Bellows ("Ally McBeal") and his real-life wife, Rya Kihlstedt, guest star as "Jeff and Patty Joyce, the distraught parents of the missing girl.
603: Remembrance Of Things PastMon, May 22 2|1cPM
When several women are found murdered in a similar fashion, Rossi revisits a cold case that has haunted him for 25 years, causing him to suspect that the original killer is at work again. Guest stars include Daniel J. Travanti as Mr. Mullens, the original unsub that Rossi hunted in the first string of killings years ago, who now suffers from Alzheimer's Disease.
605: Safe HavenMon, May 22 4|3cPM
The BAU team is on the trail of a serial killer targeting families throughout the Midwest. Meanwhile, Morgan is concerned when Ellie runs away from her foster family and pays him a visit. Emmy Award winner Mare Winningham ("Hill Street Blues") guest stars as "Nancy Riverton, a mother who takes the possible suspect into her home, and Isabella Murad returns as "Ellie Spicer, "Detective Spicer's daughter.
606: Devil's NightMon, May 22 5|4cPM
The BAU team must find a killer who has struck Detroit for the past three years solely during the raucous pre-Halloween celebration "Devil's Night." Guest stars include Ernie Hudson ("Oz") as Detroit Police "Lieutenant Al Garner; Leonard Roberts ("Heroes," "Drumline") as "Kaman, a suspect in the Devil's Night slayings; Carl Lumbly ("Alias," "Justice League") as diner owner "Jay-Mo; and Michael Warren ("Hill Street Blues") as "Tom, another potential victim.
608: Reflection Of DesireMon, May 22 7|6cPM
When a kidnapped woman is found murdered in an alley in Georgetown, the BAU team goes on the hunt for the killer before he can strike again. Guest stars include Academy Award Nominee Sally Kirkland ("Anna," "JFK") as 1950s film actress "May, and Robert Knepper ("Heroes," "Prison Break") as her devoted son, "Rhett.
610: What Happens At HomeMon, May 22 9|8cPM
The BAU searches inside a gated New Mexico community for a killer targeting women, and "Hotchner looks to an FBI cadet with a unique past for help with the investigation. Rachel Nichols ("Star Trek," "Alias") guest stars as "Agent Ashley Seaver, an FBI cadet with a troubled past who assists with the case.
611: 25 To LifeMon, May 22 10|9cPM
"Morgan suggests that a man has been rehabilitated and aids in his parole, but later regrets his decision when the man murders someone days after being released. Rachel Nichols ("Star Trek," "Alias") returns as "Agent Ashley Seaver. Guest stars include Kyle Secor ("Homicide: Life on the Street") as recently paroled "Don Sanderson and Philip Casnoff ("Sinatra," "Strong Medicine") as "Congressman James Stanworth.
613: The Thirteenth StepTue, May 23 12|11cAM
The BAU hits the road to track down a pair of young lovers on an interstate murder spree. Also, "Prentiss hears frightening news from her former boss at Interpol. Guest Stars include Adrienne Palicki ("Friday Night Lights," "Lone Star") and Jonathan Tucker ("The Black Donnellys") as "Sydney and "Ray, the young lovers on the run; and Angus Macfayden ("Braveheart") as "Sean McAllister, Prentiss' former colleague.
614: Sense MemoryTue, May 23 12|11cPM
The BAU travels to Los Angeles to investigate unusual murders throughout the city. Also, more of "Prentiss' mysterious past comes to light. Guest stars include Brad William Henke ("Lost," "Dexter") as taxi driver "Steve;' Matthew Glave ("ER," "Army Wives") as "Detective Bailey, who assists the investigation; Stacey Oristano ("Friday Night Lights") as missing woman "Anisa Gold; and Timothy V. Murphy ("24") as "Ian Doyle, a person from Prentiss' past.
615: Today I DoTue, May 23 1|12cPM
The BAU is called to upstate New York to investigate mysterious disappearances. Also, "Prentiss gets some disturbing news about one of her former Interpol colleagues. Guest stars include Rachel Miner as a missing person,"Molly; Corbin Bernsen as Molly's father, "Jerry; and Joshua Leonard as Molly's boyfriend, "Lyle.
616: CodaTue, May 23 2|1cPM
"Reid makes a connection with an autistic child that could assist the BAU in finding the boy's missing parents. Also, "Prentiss enlists two former Interpol colleagues in hunting an old nemesis. Guest Stars include Sebastian RochÃ© ("General Hospital," "Fringe") as "Clyde Easter, one of Prentiss' former colleagues; Jessica Lundy ("Hope & Gloria") as missing parent "Alison Sparks; Mimi Kennedy ("Dharma & Greg," "Homefront") as teacher "Miss Rogers; and Romy Rosemont ("Glee," "CSI: Crime Scene Investigation") as "Lizzie Sparks, the young boy's estranged aunt.
617: ValhallaTue, May 23 3|2cPM
After a series of suspicious murders occur, Prentiss suspects her old Interpol nemesis, making her fear for the safety of her BAU team as he closes in on her. Sebastian RochÃ© ("General Hospital," "Fringe") returns as "Clyde Easter, Prentiss' former Interpol colleague.
618: LaurenTue, May 23 4|3cPM
"Prentiss is ready to confront her nemesis, "Ian Doyle, once and for all. Meanwhile, the BAU calls upon "JJ to help them find "Prentiss and capture "Doyle before it's too late. Series star Matthew Gray Gubler directs the episode. A.J. Cook returns as Jennifer "JJ" Jareau.
620: Hanley WatersTue, May 23 6|5cPM
As the BAU investigates targeted killings in Tampa, they also deal with their own feelings about the loss of "Prentiss. Guest stars include Kelli Williams ("Lie to Me," "The Practice") as suspect "Shelley Chamberlain, and David Chisum ("One Life to Live") as her estranged husband, "Don.
621: The StrangerTue, May 23 7|6cPM
The BAU hunts a stalker in San Diego who is targeting college students. Meanwhile, the team comes under Strauss' scrutiny in the wake of the loss of "Prentiss. Indianapolis Colts tight end Dallas Clark guest stars as San Diego Police Officer "Austin Kent, who assists the BAU with the investigation.
623: Big SeaTue, May 23 9|8cPM
The BAU is Florida-bound to investigate bodies discovered buried in the ocean floor off Jacksonville, but the case rattles "Morgan when his aunt suspects that her missing daughter is one of the victims. Denise Dowse ("The Guardian," "Beverly Hills, 90210") guest stars as Morgan's aunt, "Yvonne Burns.
624: Supply And DemandTue, May 23 10|9cPM
The bodies of two missing persons are found in a car trunk, and the BAU suspects that an interstate human trafficking ring is at work. Also, "Hotch warns the team of possible changes, and they are surprised when a beloved team member returns. A.J. Cook returns as Jennifer "JJ" Jareau. Nicholas Brendon ("Buffy the Vampire Slayer") returns as Garcia's boyfriend, "Kevin Lynch. Amy Price-Francis ("24") guest stars as "SSA Andi Swan, head of the Domestic Trafficking Task Force, who assists the BAU on the case.