John Baird caught sight of a book and it captured his
attention. On the cover was an old photograph of a street from a bygone era,
but for some reason, the photograph haunted him. Desperate for answers, John
even allowed himself to be hypnotized by a local shop owner to try and get to
the bottom of the mystery. His obsession with the photograph begins to distress
his new wife Andrea, who is equally puzzled by her husband’s reticence to
discuss his London job – he disappears for the day and says nothing about where
he was or what he did...
Meanwhile, Dr. Alan Twist and Inspector Archibald Hurst are
hunting a serial killer known as the Acid Bath Murderer, and before long the
two plot threads collide, along with a third thread taking place in Victorian
London. There are even two impossibilities at work: first, a clairvoyant sends
his own death prediction to himself, only to be found murdered in a locked
room. Second, a man disappears without trace from a room that is under observation
from all sides.