1 rich Libsyn https://www.libsyn.com 90 600 Sierra receives a tip from a mysterious benefactor. Matilda and Kostantina develop their theory of the Explorers. Z conducts an experiment. Helen and Sierra talk across time.&amp;nbsp; You can support Mirrors by subscribing and leaving a review at your favorite podcatcher or by going to&amp;nbsp;https://www.patreon.com/mirrorspodcast&amp;nbsp; Music is &quot;The Cavern&quot; by Sara Afonso, available at the Free Music Archive.&amp;nbsp; Our cover image is courtesy of the Wellcome Library and has been made available under Creative Commons License 4.0.&amp;nbsp; All sound effects can be found at&amp;nbsp;https://www.freesfx.co.uk/&amp;nbsp; Mirrors http://mirrorspodcast.libsyn.com/website <iframe title="Libsyn Player" style="border: none" src="//html5-player.libsyn.com/embed/episode/id/11699642/height/90/theme/custom/thumbnail/yes/direction/forward/render-playlist/no/custom-color/88AA3C/" height="90" width="600" scrolling="no" allowfullscreen webkitallowfullscreen mozallowfullscreen oallowfullscreen msallowfullscreen></iframe> https://assets.libsyn.com/secure/content/55335752