The Steel Kiss (Lincoln Rhyme 12)

- Trace:

- Phenol.

- Motor oil.

- Profile of suspect (Unknown Subject 40).

- Wore checkered jacket (green), Braves baseball cap.

- White male.

- Tall (6'2" to 6'4").

- Slim (140-150 lbs.).

- Long feet and fingers.

- No visual of face.

CRIME SCENE: HEIGHTS VIEW MALL, BROOKLYN

- Offense: Homicide, escape from apprehension.

- Victim: Greg Frommer, 44, clerk with Pretty Lady Shoes in mall.

- Store clerk, left Patterson Systems as Director of Marketing. Will attempt to show he would have returned to a similar or other higher-income job.

- COD: Loss of blood, internal organ trauma.

- Means of death:

- Unsub 40 hacked into CIR DataWise5000 controller and opened door remotely.

- Discussion with CIR executives.

- Tracing the signal: only each manufacturer could do that. Difficult.

- Probably impossible to identify him.

- Danger of hacking could be minimized by companies' installing security patches. CIR is sending out warning to do so.

- Evidence:

- DNA, no CODIS match.

- No friction ridges sufficient for ID.

- Shoeprint, likely unsub's, size 13 Reebok Daily Cushion 2.0.

- Soil sample, likely from unsub, containing crystalline aluminosilicate clays: montmorillonite, illite, vermiculite, chlorite, kaolinite. Additionally, organic colloids. Substance is probably humus. Not native to this portion of Brooklyn.

- Dinitroaniline (used in dyes, pesticides, explosives).

- Ammonium nitrate (fertilizer, explosives)

- With oil from Clinton Place scene: Possibly constructing bomb?

- Additional phenol (precursor in making plastics, like polycarbonates, resins and nylon, aspirin, embalming fluid, cosmetics, ingrown toenail cures; unsub has large feet, so--nail problems?)