Woman of mystery (6)
I believe the answer is:
agatha
(Other definitions for agatha that I've seen before include "Bertie Wooster's aunt" , "Woman" , "-- Christie, English novelist" , "female" , "...... Christie wrote great detective stories" .)
I believe the answer is:
agatha
(Other definitions for agatha that I've seen before include "Bertie Wooster's aunt" , "Woman" , "-- Christie, English novelist" , "female" , "...... Christie wrote great detective stories" .)