The pattern of lacerations match the serrations. The depth and the width of the stab wounds could all have been made with this type blade.
12 seconds sound clip from the Cruising movie soundboard.
You can hear this line at 00:53:27 in the Blu-ray version of the movie.
Quote context
[...]
- Good evening. Table for two?
- Yeah.
- Hmm-mm.
- Yes, would you like a drink before dinner?
- OK.
- And what about you, sir? Something to drink?
- I'll have... I'll have a steak.
- Right. How would you like those cooked?
- Rare.
- Medium.
- Could you take off an arm or a leg with that thing?
- You'd have to be very strong. But, yes, it could get the job done.
- This is what you're looking for. Your man's carrying this.
- Come on, guys, let's get it going. Another half-hour, I'm on overtime.
[...]