For reasons Sherlock Holmes (from the original stories) is in the present day. So is Watson if that's where your inclinations lie. They're contacted by Jim Gordon (because why not) to find out who Joker really is once and for all. Batman, betrayed by another father figure (turns out Alfred was Ra's Al Ghul, go figure) gives a press conference where he says HE'LL uncover who Joker is, and do it for free... unlike Holmes, who's working for the secret stash of Joker-opium in the GCPD Evidence Room.
So it's Batman vs Sherlock Holmes - best detective wins.
Who wins? You decide. Kinda.
So it's Batman vs Sherlock Holmes - best detective wins.
Who wins? You decide. Kinda.