Very much a what If story, what if there were two Mona Lisa's, how much would a private collector be prepared to pay.
This was an enjoyable episode, with Colonel March in place to prevent a crime, as opposed to dealing with a crime after the fact.
You know some sort of swizz is going to take place, you just don't know how, or who is on hand, fortunately the incredibly clever Colonel is on hand, with a rather unexpected device.
I have literally just watched Eric Pohlmann in an episode where he played a Detective, he had a lot more to do here.
It's a different format, as there's no murder, and no mystery to solve, this one's more a chance for March to show off his cleverness.
I thought this episode was rather fun, 7/10.