I wouldn't have believed it, Harry. I'm very disappointed.

6 seconds sound clip from the Attack of the 50 Foot Woman (1958) movie soundboard.

You can hear this line at 00:34:24 in the Blu-ray version of the movie.

Quote context

[...]

- Now, what happened to Mrs. Archer, and what happened to the diamond she was wearing?

- He's lying. I left the house alone, right after you, Dr. Cushing.

- That's right. Harry was with me all evening.

- We were just stepping out for air when your deputy stopped US.

- Doctor, it's time for that injection you ordered.

- Thank you, nurse. Thank you.

- I wouldn't have believed it, Harry. I'm very disappointed.

- Careful with that, nurse. Exactly .75 cc.

- One way or another.

- When Mrs. Archer regains consciousness, she'll corroborate me, sheriff tuppett.

- Well, where does that leave us?

- Nowhere.

[...]