The Twelfth Card (Lincoln Rhyme 6)

* Writer's first language most likely Arabic.

* Improvised explosive device, as part of booby trap. Fingerprints are those of convicted bomb maker Jon Earle Wilson.

* Located. En route to Rhyme's for interviewing.

POTTERS' FIELD SCENE (1868)

* Tavern in Gallows Heights--located in the Eighties on the upper West Side, mixed neighborhood in the 1860s.

* Potters' Field was possible hangout for Boss Tweed and other corrupt New York politicians.

* Charles came here July 15, 1868.

* Burned down following explosion, presumably just after Charles's visit. To hide his secret?

* Body in basement, man presumably killed by Charles Singleton.

* Shot in forehead by .36 Navy Colt loaded with .39-caliber ball (type of weapon Charles Singleton owned).

* Gold coins.

* Man was armed with Derringer.

* No identification.

* Had ring with name "Winskinskie" on it.

* Means "doorman" or "gatekeeper" in Delaware Indian language.

* Currently searching other meanings.

* Was title of official in Boss Tweed's Tammany Hall political machine.

PROFILE OF UNSUB 109

* Determined to be Thompson G. Boyd, former executions control officer, from Amarillo, TX.

* Presently in custody.

PROFILE OF PERSON HIRING UNSUB 109

* Bani al-Dahab, Saudi national, in country illegally after visa expired.

* Deceased.

* Search of apartment revealed no other terrorist connections. Presently checking phone records.

* Currently investigating his employers for possible terrorist links.

PROFILE OF UNSUB 109'S ACCOMPLICE

* Determined not to be man originally described, but Alina Frazier, presently in custody.

* Search of apartment revealed weapons and money, nothing else relevant to case.

PROFILE OF CHARLES SINGLETON

* Former slave, ancestor of G. Settle. Married, one son. Given orchard in New York state by master. Worked as teacher, as well. Instrumental in early civil rights movement.