Would a law firm care about a failed graduate course?

I had a decent undergraduate GPA, and am finishing up a masters degree at a prestigious school in the UK (I’m Canadian). I am planning to return to Canada and apply to law school. Based on my undergrad GPA and my results on practice LSATs, I think I have a good chance at most Canadian Law schools.

However, I just got my results back from my MA exams, and I badly failed one of them. It was a statistics course - I’d never taken stats before, but after a TA told me that it was needed to get into PhD programmes and that I was smart enough to handle it, I took a fairly difficult class. I got stuck on an early question, kept trying to answer it instead of moving on, and didnt complete enough of the exam before time ran out.

Basically my question is: how likely are law firms to ask for graduate school transcripts, and if they did would a failed master’s course badly hurt my chances? I am going to rewrite the exam and I know I can get an ok mark on the re-sit, but my transcript will show that I rewrote (and the original mark), and I can no longer graduate with any honours, regardless of my second result.

It would be rough to get to law school, work hard there, and find out halfway through that my options were limited before I’d even arrived.

A law firm should not care about non-law school grades. I have just a BA and a JD and have never even requested my undergrad transcript for law firm application purposes.