Mortal Engines: Robert Sheehan and Leila George Interview Not only is Mortal Engines ushering gigantic, rolling cities onto the big screen this weekend, but the movie also rocks an ensemble cast that includes a number of up and comers you might want to keep an eye on - that is, if you aren't already doing so. Robert Sheehan, for example, has been adding titles to his resume for years now. He was in The Mortal Instruments: City of Bones, Geostorm, he's got the new Netflix series The Umbrella Academy coming
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