After Watson had moved back in with Holmes on Baker Street and daily life had returned to normal for Holmes, Watson continued to struggle daily with the ghosts of the past. The death of his beloved Caroline haunted him deep into the night. Holmes decided it was time to confront Watson with his experiences so that he could finally find closure regarding his wife's murder. But was it really murder? Police files speak of suicide. Holmes and Watson set out to search for clues and make an almost unbearable discovery for the good doctor.