* Fine sand used as "obscuring agent." Sand was generic. Because he's returning to the scene?
 
 * Metal bar, 81 pounds, is needle-eye span. Not being used in construction across from the alleyway. No other source found.
 
 * Duct tape, generic, but cut precisely, unusual. Exactly the same lengths.
 
 * Thallium sulfate (rodent poison) found in sand.
 
 * Soil containing fish protein--from perp, not victim.
 
 * Very little trace found.
 
 * Brown fibers, probably automotive carpeting.
 
 Other:
 
 * Vehicle.
 
 * Ford Explorer, about three years old. Brown carpet. Tan.
 
 * Review of license tags of cars in area Tuesday morning reveals no warrants. No tickets issued Monday night.
 
 * Checking with Vice about prostitutes, re: witness.
 
 * No leads.
 
 INTERVIEW WITH HALLERSTEIN
 
 Perp:
 
 * EFIT composite picture of the Watchmaker--late forties, early fifties, round face, double chin, thick nose, unusually light blue eyes. Over 6 feet tall, lean, hair black, medium length, no jewelry, dark clothes. No name.
 
 * Knows great deal about clocks and watches and which timepieces had been sold at recent auctions and were at current horologic exhibits in the city.
 
 * Threatened dealer to keep quiet.
 
 * Bought 10 clocks. For 10 victims?
 
 * Paid cash.
 
 * Wanted moon face on clock, wanted loud tick.
 
 Evidence:
 
 * Source of clocks was Hallerstein's Timepieces, Flatiron District.
 
 * No prints on cash paid for clocks, no serial number hits. No trace on money.
 
 * Called from pay phones.
 
 CRIME SCENE THREE
 
 Location:
 
 * 481 Spring Street.
 
 Victim:
 
 * Joanne Harper.