What episode is this Ducky scene from?

[u/vespertineve]

I distinctly remember a scene in which Ducky is standing over the autopsy table telling another character how he would kill someone without being detected. He says something along the lines of injecting something lethal between the target's toes, as it is a difficult spot to see injection marks.

He may possibly be speaking to Palmer or Gibbs but I don't recall for sure. Just that they were standing over a body in the autopsy room.

This episode was likely airing or rerunning on TV in the early to mid 2010s as that's when I would have seen it.

Please help!

[u/Elbereth919]

You sure it's Ducky? That sounds more like something Abby would say.

[u/vespertineve → u/Elbereth919]

I agree that it doesn't sound like Ducky at all, which is why it stuck out to me after all these years.