John's done with his own existence. With Sherlock and Mary both dead, there really is no point. So with a gun in his hand, he makes a brokenhearted alcohol fueled decision. Though, its quickly interrupted by an image he thought he'd never see again. this is also sort of from my own story, sort of. it was inspired by a fanfic i wrote originally for BBC Sherlock, and i may or may not be putting it in an actual Sherlock Holmes story.