Former Dallas star Patrick Duffy has been cast in two episodes of Reba, TV Guide Online has learned. He'll play a marriage counselor who falls for Reba. He debuts on Oct. 22. In other casting news, Shannen Doherty has agreed to do another three episodes of Fox's struggling sudser North Shore, upping her commitment to six episodes.
(Disclosure: TV Guide is owned by CBS Interactive, a division of ViacomCBS.)