In this exclusive extended preview of the next all-new episode of Criminal Minds entitled "Assistance Is Futile," which airs on Wednesday, Mar. 15 at 9/8c on CBS and CBS All Access, Dr. Reid has some tough decisions to make in prison when he suddenly finds himself without an ally.
Meanwhile, the BAU receives help from a woman (guest star Tatum O'Neal) who comes forward with valuable—and incredibly disturbing—information about an UnSub known as "The Bone Crusher."
Watch the video above to see how Dr. Reid takes to the jailhouse "rules."
Watch all-new episodes of Criminal Minds on Wednesdays at 9/8c on CBS and CBS All Access.