Book 5 Material Witness by Robert K. Tanenbaum 3.99 · 725 Ratings · 35 Reviews · published 1993 · 17 editions
A novel of murder, political coverup and corruption, by the author of Reversible Error and No Lesser Plea. When New York's top celebrity athlete is shot to death, Assistant D.A. Butch Karp and his wife/partner, Marlene Ciampi, take on an accumulation of mobsters, hitmen, big city guns and big shots.


Book 6 Corruption of Blood by Robert K. Tanenbaum 3.87 · 779 Ratings · 51 Reviews · published 1995 · 19 editions
When Congress reopens the investigation into the JFK assassination, Manhattan Assistant D.A. Butch Karp is assigned to the case, but as Karp and his team uncover dramatic new evidence, they become enmeshed in a web of conspiracy that reaches to the highest levels of government.


Book 7 Justice Denied by Robert K. Tanenbaum 3.93 · 873 Ratings · 41 Reviews · published 1994 · 18 editions
Homicide Bureau Chief Butch Karp and his dedicated A.D.A. wife, Marlene Ciampi have their hands full in a city of political terrorism, paid assassins, muggers, shysters, and a Mafia muscle man.

Book 8 Falsely Accused by Robert K. Tanenbaum 4.01 · 937 Ratings · 58 Reviews · published 1996 · 18 editions
Battling the city on behalf of a former government employee, attorney Butch Karp finds himself working alongside his wife, Marlene, a detective specializing in domestic violence cases, when a series of shocking crimes joins their cases.