Hotchner's brother wears a wire.
The BAU believes that The Replicator may have FBI clearance.
The BAU tries to get to Erin Strauss before its too late.
The Replicator hacks into Garcia's system.
The BAU rescues one of their own from The Replicator.
Rossi is poisoned by The Replicator.
Hotchner and Blake's helicopter crashes while in route to catch The Replicator.
Rossi interrogates Hotchner's brother in connection with several mysterious deaths.
The BAU is called to New York City to investigate multiple deaths that involved the drug ecstasy.
Season eight of the drama begins with Alex Blake's (Jeanne Tripplehorn) first case with the BAU, in which the team travels to Texas after an ambulance carrying an UnSub known as "The Silencer" overturns on a highway. Reid's personal and professional life collide as he becomes romantically attached to a scientist whom he only speaks to over the phone, but she may be harboring a dark secret.
Alice stops by a nervous Vincent's house. Watch an All New 'Criminal Minds' on April 29.
The team begins to get inside the mind of an elusive arsonist.
James Van der Beek guest stars on CBS' 'Criminal Minds.'