| Harry Houdini, played by Michael Weston TBD |
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| Arthur Conan Doyle, played by Stephen Mangan TBD |
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| Adelaide Stratton, played by Rebecca Liddiard TBD |
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| Horace Merring, played by Tim McInnerny Merring is the Chief Inspector of Scotland Yard. He has one deceased son, Will, who died in the Boer War. |
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| George Gudgett, played by Adam Nagaitis TBD |
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