What's the meaning of “cross any of our desks”?

Question

So I saw this line from a TV drama (again) and couldn't understand it. Here is the line:

But Michaela Stone remains a person of interest in the most perplexing investigation ever to cross any of our desks.

What's the meaning of "cross any of our desks"? I was guessing "according to our records" or something like that.

Answer 1

Basically it's a variation on the idiom

"To cross one's path"

Which means "to encounter". The author substituted the word "desks" for "path" to emphasise the idea that the encounter happened at work.

Answer 2

The phrase to "cross my desk" or "come across my desk" is an idiom meaning to be introduced to/to see (usually in a working context).

In this context then, the sentence means "Michaela Stone remains a person of interest in the most perplexing investigation we have ever seen at work." (Emphasis mine).