Titles (or "British vs American")

Many readers of Agatha Christie know that her books were known by different titles (we're talking about the English language here). One title would be different than another across the Atlantic. 4.50 from Paddington in the UK, and What Mrs. McGillicuddy Saw! in the US? Why? How about the British title Why Didn't They Ask Evans? comapred to its American one, The Boomerang Clue? These are titles for the same novel?!

In this article, we attempt to analyze the curious differences between the title of a Christie novel in the UK versus that in the US. We are covering only just a few. We'll see if there's a clear winner between the two (sorry, but it's my own humble opinion). Following each entry, you get to decide by placing a vote.