Complex sentence: He even manages to have "his" stage play "Live Wire" performed at the Hollywood Playhouse, although the script is actually a case of plagiarism, "The Front Page" in flimsy disguise; strangely enough, no one except Manheim seems to notice.
Split into simpler sentences: He even manages to have "his" stage play "Live Wire" performed at the Hollywood Playhouse. The play is actually a case of plagiarism, "The Front Page" in flimsy disguise; strangely enough, no one except Manheim seems to notice.