Spiral Staircase (comic story)

 was the second part of the fifth story of the Doctor Who: The Tenth Doctor comic story series, published in 2015. It served as a sequel to Pyramids of Mars.

Summary
A terrifying pyramid has appeared in the skies above New York City, and it's here to claim an ancient secret – buried in the body of a very-much alive movie star!

As the Doctor attempts to unravel the conflict, Gabby and Cindy's friendship is stretched to breaking point. Has Gabby changed too much in her short time away – or has she changed just enough to save the day?!

Part one
to be added

Part two
to be added

Characters

 * Tenth Doctor
 * Gabby Gonzalez
 * Cindy Wu
 * Cleo
 * Dorothy Bell
 * Erik Ulfriksson
 * Hanif
 * Seeker
 * Trinity Wells
 * Vivian
 * Anubis

Original print details
to be added

Continuity

 * Dorothy notices Gabby's sketchbook. (COMIC: The Arts in Space, The Weeping Angels of Mons, et al.)
 * Dorothy describes Gabby's quantum possibilities as being like butterflies. (COMIC: Vortex Butterflies, et al.)
 * Erik and Hanif are high priests of the Cult of the Black Pyramid. They talk about how Marcus Scarman travelled to the forbidden pyramid and became a servant of the gods. They mention that Scarman, as well as their high priest, was killed in a great fire at his estate. They see this as the revenge of the gods. The Doctor explains that they were Osirans and not gods. (TV: Pyramids of Mars)
 * The Doctor mentions that ancient Chinese gods were creatures from another dimension. (COMIC: Sharper Than a Serpent's Tooth)
 * The Doctor recalls the Daleks engineering the Medusa Cascade. (TV: The Stolen Earth / Journey's End)