<i>The Strange Case of Dr Jekyll and Mr Hyde</i>&nbsp;is a gothic novella. It is about a London lawyer named Gabriel John Utterson who investigates strange occurrences between his old friend Dr Henry Jekyll, and the evil Edward Hyde.<br />?The novella&rsquo;s impact is such that it has become a part of the language, with the very phrase &ldquo;Jekyll and Hyde&rdquo; entering the vernacular to refer to people with an unpredictably dual nature: usually very good, but sometimes shockingly evil.