Since my exposure to Blake Edwards beyond his comedies has only been `Days of Wine and Roses', which is one of the most depressing films I've ever seen, I wasn't sure what to expect in the way of a thriller from a director who I largely respect. `Experiment in Terror' which stars Lee Remick and the always great Glenn Ford, turned out to be an outstanding and slick film which was thoroughly enjoyable.
While the story, about a bank teller who is threatened with the kidnapping of her younger sister if she doesn't steal 100K from her employer, and the FBI agent (Ford) who tries to both protect her and find out who the extortionist is, does not rely on cheap thrills in order to create suspense. Rather, the black and white film and noir-like shadows help build the tension while not taking away from the story. The cinematography is extremely crisp, and, like many well-made noir films of the 40's-mid 60's, you can almost imagine each frame as a beautiful photograph.
While I'd never heard of this film until coming across it on one of the movie channels, it is well worth looking for.
--Shelly