In May 2012 suspected serial killer Angel Guridy-Cabral was extradited from the Dominican Republic for the 1993 murder of his girlfriend Altagracia Valdez, 24, after new DNA technology linked him to the crime.

Valdez was found on the living room floor of her apartment, her baby son unharmed nearby. She was stabbed in the neck and shoulder and appeared to have been sexually assaulted.

Guridy-Cabral fought his extradition from the Dominican Republic for nearly two years.

Police also suspect him in a half-dozen other crimes in the Bronx, Manhattan and Queens, including rapes and murders. But he could only be charged with the 1993 murder due to a clause in the extradition deal.

He was a detective supervisor for 19 years and Commanding Officer of the Bronx Cold Case Homicide Squad, personally working on hundreds of murder and missing person cases in his career. He has written The Criminal Investigative Function: A Guide for New Investigators, a real-world look into criminal investigations-from the crime scene all the way to the courtroom-all the actual legalities that impact investigations the most. BRONX COLD CASE HOMICIDE-Joseph L. Giacalone