Possible Clues:

• Saga that features a good woman
• Dame of mystery writing
• Character in Eliot drama, also found in saga that inspired it
• Dame - - Christie, English detective-story writer
• - - Christie (lit.)
• She's the girl in drag at Hastings
• Sort of saga which almost reveals writer's first name
• Detective story writer
• Dame - Christie, English crime writer
• Big name in whodunits