1. The tape recordings provided prosecutors with the smoking gun they needed to prove he'd been involved in the conspiracy.

2. The Internal Revenue Service thought it had a smoking gun.

3. Investigators have failed to find a smoking gun to connect the mayor to the missing money.

4. The smoking gun was the lipstick on his collar.

5. Pentoxifylline for steatohepatitis: Magic bullet or smoking gun?

6. We have it. The smoking gun. The evidence. The potential weapon of mass destruction we have been looking for as our pretext of invading Iraq. There's just one problem - it's in North Korea.

7. This memo could be the smoking gun that investigators have been looking for.

8. We have it. The smoking gun. The evidence. The potential weapon of mass destruction we have been looking for as our pretext of invading Iraq.

9. Police are still looking for a smoking gun in the kidnapping case.

10. The search for other kinds of evidence tying him to trafficking has not produced a smoking gun.

11. Federal agents and prosecutors said they found what amounts to a smoking gun in the case.

12. If you are referencing "climategate", then there really isn't any smoking gun there,() either.

13. FORTUNE has learned that the SEC may have found a smoking gun.

14. The report's inconclusiveness of the current developments in possible military dimension suggests that there is no smoking gun.

1. The search for other kinds of evidence tying him to trafficking has not produced a smoking gun.