801: The Silencer
When a Texas prisoner escapes during a transfer, he leaves behind victims with his unique trademark, sewing their mouths shut, a signature the BAU remembers as unique to the UnSub "The Silencer. While they investigate who he was and who he's become, the BAU also gets to know the newest member of the team, on the eighth season premiere of CRIMINAL MINDS.
802: The Pact
When the bodies of two seemingly unrelated victims are found just hours apart in San Diego and Los Angeles respectively, the BAU suspects that that not one, but two killers are working together to commit these murders. Guest stars include Mackenzie Phillips as Ellen Russel and Kim Wayans as Darlene Beckett, the relatives of other tragically killed victims.
806: The Apprenticeship
When prostitutes in Miami are discovered murdered in a similar style to local animals found dead there, the BAU must work fast to find an UnSub whose confidence is quickly escalating. Also, Morgan tries to increase Reid's athletic skills by convincing him to join the bureau softball team.
809: Magnificent Light
When a recent attendee at a popular motivational speaker's conference in Seattle is murdered, the BAU looks at the speaker as the main suspect, but they have to refocus their investigation when the speaker himself goes missing. Also, Garcia is puzzled when Morgan declines to attend a dinner honoring an old family friend.
823: Brother Hotchner
Hotch reunites with his troubled young brother Sean who works in a bar where a young woman is killed by an apparent drug overdose. Because his ex-girlfriend died recently in a similar fashion, Sean believes there is more to the story and calls his brother in to help. When a bunch of ecstasy users die in similar fashion in a nearby nightclub, the BAU team suspects that someone has released a deadly variant of the drug into the marketplace. Hotch can't help but wonder if his brother knows more about the situation than he's letting on.
824: The Replicator
The Replicator stalks the team to New York and takes Strauss hostage, giving her an overdose of ecstasy which leaves her dead in Hotch's arms. Strauss' death hits everyone hard, especially Rossi, who takes Strauss' body back home and speaks with her children. After the Replicator hacks into Garcia's system and reveals information that only an insider could know, the agents discern that the Replicator is FBI.