Plays Musicals

What was the name of the radio play on which "The Mousetrap" was based?

More Questions from Plays Musicals
Which US Founding Father is the titular character in this popular Broadway musical?
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What is known as Broadway's first full-fledged rock opera?
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A Gentleman's Guide to Love and Murder featured book and lyrics by whom?
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The musical "Newsies" is inspired by a strike that occurred in what year?
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Which Tony award did "The Bridges of Madison Country" win in 2014?
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In which city is the Broadway musical "Xanadu" set?
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Abraham Lincoln thought that the greatest Shakespeare play was...?
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Whose memoirs were the basis of 1959's "Gypsy"?
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