<p>The reporters hit one dead end after another. They’re starting to lose hope that they’ll ever land the story, when they get a breakthrough. A private library on the coast of England could hold answers they need.&nbsp;&nbsp;</p><p>Read the Investigations team's notebook here:&nbsp;<a href="http://www.telegraph.co.uk/callbethel" rel="noopener noreferrer" target="_blank">www.telegraph.co.uk/callbethel</a>&nbsp;|</p><p>For 30 days’ free access to The Telegraph:&nbsp;<a href="http://www.telegraph.co.uk/bethelpodcast" rel="noopener noreferrer" target="_blank">www.telegraph.co.uk/bethelpodcast</a>&nbsp;|</p><p>If you have any information that could help the investigation, you can email the team on&nbsp;<a href="mailto:[email protected]" rel="noopener noreferrer" target="_blank">[email protected]</a></p><hr><p style='color:grey; font-size:0.75em;'> Hosted on Acast. See <a style='color:grey;' target='_blank' rel='noopener noreferrer' href='https://acast.com/privacy'>acast.com/privacy</a> for more information.</p>