The Adventure of the Bruce-Partington Plans - a Sherlock Holmes Short Story

Mycroft's behaviour perplexes Holmes. Until he reveals that a murder has a link with the theft of some vital and secret submarine plans. It's up to Sherlock to find them. But with the government, the military and even his own brother turning up the pressure, can Sherlock unravel the web of secrets, spies and cunning crimes before it's too late?

Everything in the story comes together nicely. And the explanation about how the man was killed from the train is as Watson states “a masterpiece.”