Sherlock wakes up in a mental institution, and doesn't remember anything prior to his 'fall' due to a drug that has been administered by Moriarty. Sherlock finally is allowed into the commons area where he finds John. Soon Sherlock is bored with checkers and flips out. now you're all caught up. Well, then Sherlock gets taken to Moriarty's office and suddenly remembers. Then these guys that work for Moriarty install a weird switchbox. and NOW you're all caught up.
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