A female demon name starting with the letter "S" Is there a female demon in christain or pagan mythology who's name starts with the letter "S". In a TV documentary titled "A haunting" on Discovery, I herd her name but have forgotten. I think its "sarah" or "sera" or "seri". I don't remember correctly.
You probably mean a Succubus. Wikipedia defines them as:


  a Lilin-demon in female form, or supernatural entity in folklore (traced back to medieval legend) that appears in dreams and takes the form of a woman in order to seduce men, usually through sexual activity. The male counterpart is the incubus.


For example, this entry in the Catholic Encyclopedia indicates that one of the charges brought about against "witches" was that of "intercourse with incubi and succubi" (where succubi is the plural of succubus).