TV Guide says that the actress will play a life coach called Charlotte Ann Robinson.
Bonnie (Nicole Sullivan) and Vince (Will Sasso) make a risky decision after going to one of Charlotte's events, leading to a confrontation between Charlotte and Ed (William Shatner).
Shepherd, who also recently signed up for a role in No Ordinary Family, is expected to appear on $#*! My Dad Says on November 18.
The show continues on Thursdays at 8.30/7.30c on CBS.