The Promise (FCBD comic story)

The Promise was the only comic story published in Free Comic Book Day 2017. It was the first comic released by Titan Publishing Group to feature Bill Potts, and the second overall, being released two days after the publication of the first Doctor Who Magazine comic strip featuring the character.

Publisher's summary
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Plot
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Characters

 * Twelfth Doctor
 * Bill Potts
 * Plex
 * Ninth Doctor
 * Tenth Doctor
 * Gabby Gonzalez
 * Cindy Wu
 * Eleventh Doctor
 * Alice Obiefune
 * The Sapling

Original print details
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Continuity

 * The Twelfth Doctor clarifies that the Ninth Doctor visited Plex shortly after regenerating (TV: The Day of the Doctor) - evidenced by the absence of Rose Tyler - and before "the imprisonment" (COMIC: Sin-Eaters) and before Tara. (COMIC: Official Secrets)
 * The Twelfth Doctor openly refers to regeneration in front of Bill, setting the story after the events of TV: Knock Knock in which he broaches the subject with her for the first time. (The comic was released the same day the episode first aired.)
 * The chameleon arch and its associated fob watch are utilised. (TV: Human Nature, The Family of Blood, Utopia)