In 2011, Cassidy began to appear in a recurring role on the ABC series "Body of Proof" as Judge Joan Hunt, the mother of Megan Hunt, Dana Delany's character on the series. The series was canceled by ABC after three seasons in May 2013. In 2015, Cassidy was cast as a main character in the Bravo scripted series Odd Mom Out. She plays the role of Candace Von Weber, a snobbish Upper East Side socialite and mother-in-law to the show's protagonist Jill Weber (Jill Kargman). The series was canceled in 2017. In 2019, she co-starred in the Amazon Prime miniseries "Too Old to Die Young" and later had a recurring role on "".