fallibility of deductive reasoning.
âI work here â on the Friends of the Museum team.â
âA promotion?â
âA step up, certainly.â
âSo you live in London now?â
She shook her head. âI commute. And you?â
âTheoretically living in Brighton but Iâm clearing out my fatherâs house in Barnes. He died some weeks ago.â
âIâm sorry.â
Watts shrugged. âHe was a good age. Packed a lot into his life.â
âAnd why are you here?â
âPicasso prints then lunch with a friend.â
She smiled. âThe Picassos are on the top floor but near the back entrance of the museum â Iâll walk you down there if you like.â
She led the way into a long gallery stocked with a mix of objects from different ages and countries. It looked vaguely like the enormous library of a country house, with books stacked high up on a balcony above long wall cases filled with everything from African masks and Etruscan funerary urns to fourteenth-century swords and Egyptian jewellery.
âThis is my favourite room,â she said. âI like the eclecticism of it.â
Two-thirds of the way down she paused at a large case and leaned in. âYour ex-colleagues are probably going to be called about this.â
Watts looked into the case. A large card stated that two John Dee artefacts had been removed from display to form part of the Shakespeare and His World exhibition.
âAbout John Deeâs artefacts being moved?â
âAbout them possibly being stolen. They went missing at the end of the Shakespeare exhibition during the transfer from one display back to this one.â
âWhat were they?â Watts asked.
âMagic stuff from the Elizabethan age.â
âMagic?â
âHave you heard of John Dee?â
âJust yesterday, actually.â
âOne of the most learned men of his day. Expert mathematician and astronomer. Typical for the time, he was also interested in the occult as a means of learning more about the universe. The Shakespeare exhibition borrowed a big wax disc with magic signs and symbols on them and a black obsidian mirror that was originally Aztec.â She pointed at the display. âYou can see the mirrorâs leather case there. They came to the museum in Sir Robert Cottonâs collection â one of the museumâs founding collections.â
âYou know your stuff.â
She smiled. âI should but Iâm still learning, believe me. We know the disc was his because thereâs a drawing of it in one of his manuscripts. It was used to support one of his shew-stones.â
âWhatâs a shew-stone?â
âLike the Aztec mirror or some other reflecting object or a crystal ball you can see into. The magician sees things in it.â She pointed to what looked like a small glass ball. âThatâs Deeâs crystal ball there â at least it probably belonged to him. We know he used one. Weâre more certain about the mirror. Later, it was owned by Sir Horace Walpole and he put a note inside the leather case stating that it had belonged to Dee and his medium, Edward Kelly.â
âBut only two of these objects have gone missing?â Watts said. He pointed at an engraved gold disc. âI would have thought that would be worth nicking.â
âBeautiful, isnât it? Itâs the âvision of the four castlesâ â something Dee experienced in Krakow in 1584. The museum got that during the Second World War â in 1942, I think. Thereâs another of his crystals on a pendant in the Science Museum. Dee used that one to cure diseases and see into the future by looking for the ghosts of people in the stone. Deeâs son Arthur gave it to the medical astrologer, Nicholas Culpeper, as thanks for curing his liver complaint.â
âThe herbalist with the shops?â
She smiled.
âI think theyâre