Helen gets some news about Martha Anderson. Sierra runs into communication barriers with the Explorers. Z slips into denial. Matilda's journey begins.

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Music is "The Cavern" by Sara Afonso, available at the Free Music Archive. 

Our cover image is courtesy of the Wellcome Library and has been made available under Creative Commons License 4.0. 

All sound effects can be found at https://www.freesfx.co.uk/