Emily Tennant: Emily Tennant. Actress: Dirk Gently's Holistic Detective Agency. Emily Tennant is a Canadian actress from Vancouver. She became known for playing school reporter Ivy Young, one of the main characters in the teen sitcom "Mr. Young" (2011-2013). She later had a recurring role in the romantic drama "Cedar Cove" (2013-2015). She played Cecilia Rendall, an old friend of regular character Justine Lockhart. Tennant replaced Katharine Isabelle, who had portrayed Cecilia...