This series continues to please with its vibrant and interesting characters. We sneak a peek at submarine and anti submarine warfare during WW1 as we follow the intrepid duo on their latest adventure. ( )

December 28th 1915. Mycroft is still in hospital after being shot while at his flat, but it seems that Sherlock has been missing since Christmas day. Can Major Flynn and Becky find and rescue him. But not all goes to plan.
Another entertaining and well-written historical mystery with its hint of romance. With its cast of varied and very likeable characters it is a good addition to this enjoyable series. ( )