Broadway legend Patti LuPone makes this Elsbeth Season 3 finale grand. She guest stars – and sings – as a diva cabaret vocalist, Ruby Lane, who becomes the titular sleuth’s (Carrie Preston) prime murder suspect in the slaying of a duke at a fictional classic New York City hotel, The Reilly.

“The episode presents an old-fashioned, elegant New York world that is holding on for dear life. People sometimes take extreme actions to hold onto what they’ve got,” says executive producer Jonathan Tolins, who based the locale on an iconic real-life spot, The Carlyle, home to Ludwig Bemelmans’ famous murals and plenty of colorful characters.

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