<Tr> <Th> Family </Th> <Td> Charles Beauchamp (father) Unnamed mother (née Seaver) </Td> </Tr> <Tr> <Th> Season </Th> <Td> 6 </Td> </Tr> <P> Played by Rachel Nichols, Ashley Seaver is an FBI cadet assigned to the BAU . Her father, Charles Beauchamp, was a horrific serial killer from North Dakota known as "the Redmond Ripper" who killed 25 women over the course of 10 years before Ashley was a teenager . He was caught by David Rossi and Aaron Hotchner . Because North Dakota does not have capital punishment, he was sentenced to life in prison . She has not been to see him . Though he writes to her sometimes, she never reads his letters, though she does keep them and admittedly still finds herself unable to hate him for what he did . In the episode "What Happens at Home", the BAU investigate a series of murders in a gated community and bring Ashley along because of her understanding of the family dynamics of a serial killer . In the end, the suspect commits suicide by cop in front of her . In the next episode, she requests that the rest of her remedial training be done with the BAU and is attached to the team . In the season seven premiere "It Takes a Village", it was revealed that Ashley transferred to the Domestic Trafficking Task Force, which is led by Andi Swann . </P> <P> Played by Jeanne Tripplehorn, FBI Linguistics expert Dr. Alex Blake replaces SSA Emily Prentiss . She is introduced in season eight . Her appointment at the BAU was met with some mixed reactions as the team was close to Prentiss . She retired in 2001 until she rejoined the BAU in 2012 to restore her reputation after Blake was blamed for arresting the wrong suspect in the Amerithrax case and Section Chief Erin Strauss let her take the fall . As a result, she and Strauss do not get along, with Strauss accusing her of joining for selfish reasons, but they eventually make amends . The rest of the team recognize her expertise and are generally less antagonistic towards her . As season eight progressed, Blake found herself in danger when she was threatened by a serial killer,' The Replicator', who turned out to be John Curtis: a fellow former FBI agent disgraced due to the events of the Amerithrax case, who targeted Blake out of envy that she had restored her reputation while his own was still in ruins . Curtis killed Strauss, kidnapped Blake, and tried to blow up the entire BAU team, but the team rescued her, and Rossi locked Curtis in the house to die when the bomb exploded as vengeance for Strauss's death . </P>

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