This was a very fun sandbox to run. I initially picked it up for inspiration as I'm writing a WWII scenario of my own, but I'm already looking forward to running it again. I ran it as a one-shot, but there are so many plot threads and loose ends to follow up on, this could easily be a multi-session scenario. The NPCs are very easy to use in whatever way you feel fit as a keeper, and there is a lot of fluidity in how it can be run, but it can also be run with very little preparation by simply reacting to what the players give you.

The only mark against it are a few proofreading errors and discrepancies in the way characters are referenced. Also, a few more handouts could have been included such as a map of the u-boat and a dossier on the NPCs (I was able to easily source the u-boat layout on Wikipedia, but I don't have the graphic design skills to make something like a dossier).