Mr. James once gave a postdefeat news conference in a tailored periwinkle ensemble.

WSJ: Remix: Suits Brighten Up For Spring | Off Duty Spring 50

Another former Doctor Who star, Freema Agyeman, will also be a series regular as Shelly Periwinkle, the owner of the Mermaid Cafe.

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Pacific yew is the source of Taxol, and the rosy periwinkle is the source of vincristine and vinblastine all drugs used to fight cancer.

WSJ: Big Pharma's Real Roots | Wild Medicine | New York Botanical Garden | By Joanne Kaufman