Spots 
Inspector Dunbar calls antique collector Moris Klaw to examine a deadly museum display where watchmen die without visible wounds. Klaw believes intense human fear and passion linger in physical space like etheric photographs. By sleeping in the cursed Greek Room with an odically sensitive camera plate, he captures the invisible cause of death and exposes a hidden mechanical trap before it strikes again.
When the priceless Iron Grail vanishes from a locked study, standard police deduction fails to find any physical trace of forced entry. Moris Klaw sets up his folding camp bed inside the empty room to absorb the emotional atmosphere of the burglary. His psychic impression reveals that the thief acted under hypnotic compulsion, guided by subtle scent marks left on the display cabinet.
A collector of rare occult literature suffers the loss of an invaluable Paracelsus manuscript known as the Theophrastus Bombast. Klaw arrives with his daughter Isis to survey the ransacked library and sample the residual thought-currents left behind. Sleeping at the scene allows Klaw to experience the thief's intense panic, leading Dunbar directly to a rival scholar hiding the document behind a false shelf.
The disappearance of a tiny, priceless ivory figure brings Inspector Dunbar back to Klaw's Wapping antique shop. Klaw spends the night on the velvet couch where the sculpture was last displayed, seeking the image recorded in the room's etheric ether. He awakens with a vision of delicate tools and a false base, proving the statue was swapped for a replica while the original owner looked on.
The theft of the famous Blue Rajah diamond leaves a wealthy household paralyzed by mutual suspicion. Klaw rests his head on a pillow inside the vault, tapping into the lingering nerve-waves of the night's intruder. His dream reveals not a master criminal, but a concealed spring mechanism inside the safe itself, designed to drop the jewel into a lower drainage pipe.
Visitors near an Egyptian mummy exhibit report hearing faint, frantic voices echoing from inside the sealed stone casing. Moris Klaw arrives with his odic camera to record the acoustic and mental vibrations trapped within the tomb's painted wood. Sleeping beside the sarcophagus reveals that a modern criminal is using the hollow relic as a drop point for stolen gems.
Eccentric investigator Moris Klaw solves impossible mysteries by capturing the psychic residue left at crime scenes.