- Someone could've been imitating his voice.
- Well, who would do that?
- I don't know, but I do know that McLane's dead.

— Martha Hunter (Pamela Duncan)

5 seconds sound clip from the Attack of the Crab Monsters (1957) movie soundboard.

You can hear this line at 00:20:27.926 in the DVD version of the movie.

Quote context

[...]

- Martha. Martha Hunter. Help me. Help me.

- Martha, help me. Help me. Martha. Come to me.

- Jim, but what? I thought.

- So you heard it too?

- Yes, it was awful, McLane's voice.

- He called me as plain as day.

- Strange, because I only heard him call my name.

- How could the navy search this whole island and miss a survivor?

- If he is a survivor.

- What does that mean? You heard him as well as I.

- Someone could've been imitating his voice.

- Well, who would do that?

- I don't know, but I do know that McLane's dead.

- Maybe, maybe not. I'm going to find out for sure.

- Jim, you're not going down there.

- Yes, I am.

- But Karl's against it.

- He's afraid of cave-ins. I'm not.

- Keep this on me till I'm out of sight.

- Jim, you don't know what's down there.

- What could be other than earth, water, and a few land crabs?

[...]