Mr Penumbra’s 24-Hour Bookstore: Discussion Page

Let us know what you think of Mr Penumbra in the comments section at the bottom of the page.
Mr Penumbra's 24-Hour Bookstore
Mr Penumbra’s 24-Hour Bookstore

A gleeful and exhilarating tale of global conspiracy, complex code-breaking, high-tech data visualization, young love, rollicking adventure, and the secret to eternal life—mostly set in a hole-in-the-wall San Francisco bookstore.”


What we’re talking about:

How to take part in the discussion
Add your thoughts in the comments section at the bottom of the page, or join the chat on Twitter, hashtag #LitroBC.

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One comment

  1. Emily Cleaver Emily Cleaver says:

    I used to work in a dusty secondhand bookshop, and the regular customers were so like the mysterious Tyndall, Federov and Lapin of Mr Penumbra’s store that I’m starting to wonder if they really were searching for a gnostic code.

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