Kitty Keene, Inc.

Kitty Keene, Inc. is an old-time radio soap running from 1937 to 1941 about a female private detective. It first aired on CBS and later on Mutual. 
Kitty was played by Beverley Younger, Gail Henshaw and Fran Carlon.
Other characters, and the actors who played them, were as shown in the table below:
There are four surviving episodes. 