July 10, 2009 Flemmi details Boston mob killings Play video

(NECN: Greg Wayland, Boston, Mass.) - The transcripts read like the script from a mob movie, but today the testimony in a Boston courtroom was very real, and a chilling reminder of the city's once violent underworld.

Convicted killer Stephen "The Rifleman" Flemmi spent a second day on the stand in a Boston wrongful death lawsuit.

75-year-old Flemmi showed no emotion as he described the 1981 killing of Debra Davis, who he had previously dated.

Flemmi testified Thursday that James "Whitey" Bulger, the leader of the Winter Hill Gang, wanted to kill Davis after he learned Flemmi had told her that they were both working as FBI informants. He also said Bulger resented the amount of time Flemmi was spending with her.

He said he agreed to lure Davis to a vacant home he owned in South Boston, where Bulger was waiting. Bulger, he said, "grabbed her by the throat and strangled her."

Flemmi said he watched and did nothing as Bulger killed Davis.

"This happened very quickly, a very traumatic moment in my life," Flemmi said.

He said Bulger carried her down the stairs while continuing to strangle her.

Information from The Associated Press is included in this report.