Premise: Love Never Dies is a romantic musical composed by Andrew Lloyd Webber with lyrics by Glenn Slater and a book by Lloyd Webber, Ben Elton, Frederick Forsyth and Slater. It is a sequel to the long-running musical "The Phantom of the Opera" loosely adapted from the 1999 novel "The Phantom of Manhattan", by Forsyth.
Hypothesis: Frederick Forsyth wrote the original novel that was loosely adapted into the musical "The Phantom of the Opera" whose sequel was composed by Andrew Lloyd Webber.