A Murder Is Announced  - Agatha Christie

Detective-Inspector Craddocks first impression of Miss Marple:

 

"Completely ga-ga"

 

But soon she wins him over with her personality:

 

"But I expect" - her candid blue eyes swept over the manly proportions and handsome face of Detective-Inspector Craddock with truly feminine Victorian appreciation - "that you will be able to persuade her to tell you all she knows."

Detective-Inspector Craddock blushed and Sir Henry chuckled.

 

And of course, Miss Marple has a plan of her own to being involved in the murder investigation:

 

"I gather she is taking up residence in Chipping Cleghorn and coming into Medenham Wells twice a week for her treatments. It seems that Mrs What´shername is the daughter of an old friend of Miss Marple´s. Good sporting instinst, that old bean. Oh, well, I suppose she hasn´t much excitement in her life and sniffing round after possible murderers gives her a kick."

 

I adore Miss Marple.