Mamie Gummer will cross paths with Sherlock Holmes! E! News can exclusively reveal Gummer will guest star in a season three episode of the hit CBS drama Elementary slated to air later this fall.
Gummer, who has appeared several times on The Good Wife and starred in the CW's Emily Owens, M.D., will play Margaret Bray, a New York heiress who runs her family's charitable foundation. After a rare map that belonged to her family leads to bloodshed—and two deaths!—Margaret finds herself a somewhat unlikely aide to Holmes (Jonny Lee Miller) and Watson's (Lucy Liu) investigation…and in danger herself!
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