Most people don't cover their tracks as well as they think they do.
4 seconds sound clip from The Master (1984) - State of the Union (S1E3) sitcom.
You can hear this line at 00:36:14.900 in the Blu-ray version of the TV Series.
Quote context
[...]
- They won't be back. But we will.
- That Webster tried to run us off the road. To kill us.
- Now, where's the proof? Webster and all those cannery workers will have an alibi for this afternoon.
- We've got to find something on him.
- If what Carrie says is true, if they did kill her brother...
- Most people don't cover their tracks as well as they think they do.
- Maybe there's something at the cannery.
- When?
- Tonight.
- There's an open window on the second floor.
- I think we got something. Look at this. Names. Lists of names.
[...]