Daniel J. Travanti Daniel J. Travanti

Hill Street Blues star Daniel J. Travanti is headed to the other side of the law: The Emmy and Golden Globe-winning actor will guest-star as a serial killer in upcoming episode of Criminal Minds, TVGuide.com has learned exclusively.

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Criminal Minds
returns Wednesday, Sept. 22 at 9/8c on CBS. Travanti will appear in the season's fourth episode, "Remembrance of Things Past," which is slated to air in October.

Do you think Travanti will make a good adversary?