Spoilers are precisely defined here. Rules vary by the story's medium. Info from television stories can't be added here until after the top or bottom of the hour, British time, closest to the end credits roll on BBC One. Therefore, fans in the Americas who are sensitive to spoilers should avoid Tardis on Sundays until they've seen the episode.
Miniscope parts fetch quite a price on the open market — luckily, River knows where she can find one that's about to be decommissioned. Unfortunately, this particular miniscope is chock-full of aliens, as well as unsuspecting Earthlings.
River must face a carnival of monsters before she can claim her prize – across miniature habitats, Ogrons, Sontarans and Drashigs await!
For the purposes of this list, a "Sontaran story" is one in which one living, authentic Sontaran plays a part within the confines of the story, outside of flashbacks to previous stories and cliffhangers that lead into the following story. For this reason, stories such as The Halloween Apocalypse are not counted due to the Sontarans' appearance being defined by their importance to following stories. Stories like The End of Time and The Time of the Doctor are also not included due to the Sontarans' appearance being no consequence to the plot of the story. Stories featuring Strax of the Paternoster Gang are only included on the Paternoster Gang story template.
For the purposes of this list, an "Ogron story" is one in which one living, authentic Ogron plays a part within the confines of the story, outside of flashbacks to previous stories and cliffhangers that lead into the following story.