The Hunters, The Time Lord, and the Detective

Sam and Dean discover a case different from anything they have seen before. They are faced with cases that seem to e copycats of those from the famous books of Sherlock Holmes. What they don't know is they aren't the only ones faced with difficult decisions. --- Sherlock and John have also discovered something quite like anything else after they take a case while seeing the body of a women with a hole ripped through her chest. Both couples have received letters (or a text) from one who claims to be someone who shouldn't exist in the real world. The Doctor. --- The Doctor knows he shouldn't get involved with the two worlds joining into one. Too impossible and to dangerous. After a collapse in time, three worlds are bursting into one bringing the foes consisting of killers from London, demons from Hell, and aliens from the future. The sake of all three worlds is depending on the The Hunters, the Time Lord, and The Detective.