/*Barry Gilton*/, 38, and /*Lupe Mercado*/, 37, pleaded not guilty Friday, as friends and family members packed the courtroom to support them. Because the couple allegedly planned what District Attorney George Gascon called a "vigilante murder," they are eligible for the death penalty, according to KGO-TV, ABC's San Francisco station.
Gilton's and Mercado's defense lawyer said he thinks prosecutors are making a "big mistake."
