Editing Pyramids of Mars (section)

===Writing===
The [[Universal Pictures]] film ''[[The Mummy (1932 film)|The Mummy]]'' (1932) and especially the [[Hammer Film Productions|Hammer]] horror films ''[[The Mummy (1959 film)|The Mummy]]'' (1959) and ''[[Blood from the Mummy's Tomb]]'' (1971) influenced the story.<ref name="BBC"/> It was originally written by [[Lewis Greifer]], who had been approached by script editor [[Robert Holmes (scriptwriter)|Robert Holmes]], his former colleague at [[Associated Television|ATV]]. However, it was considered unusable as a ''Doctor Who'' script, even after multiple rewrites, due to Greifer's unfamiliarity with ''Doctor Who''; Holmes took over, with Greifer retaining the option to have his name on the script.{{sfn|Wright|2016|p=46}} While he retained the basic premise, he completely altered other aspects, which included making the "Osirians" a powerful alien race, and changing the setting to 1911, instead of a more contemparary time.{{sfn|Wright|2016|pp=46-50}} The pseudonym used on transmission was Stephen Harris.{{sfn|Wright|2016|p=55}} 

Although the name of Sutekh's race is pronounced "Osiran" throughout the serial, the scripts and publicity material spell it as "Osirian" in some places and as "Osiran" in others.<ref name="television companion">{{cite book |last1=Howe |first1=David J. |author1-link=David J. Howe |last2=Walker |first2=Stephen James |author2-link=Stephen James Walker |title=The Television Companion: The Unofficial and Unauthorised Guide to DOCTOR WHO |publisher=Telos Publishing Ltd. |location=Surrey, UK |edition=2nd |year=2003 |page=387 |isbn=1-903889-51-0}}</ref>