Attorneys Tony Tamburello (left) and Eric Safire discuss the charges against their clients, Lupe Mercado and Barry Gilton, after the couple's arraignment at the Hall of Justice in San Francisco, Calif. on Wednesday, June 20, 2012. The Gilton and Mercado are accused of killing a man who they believe was their 17-year-old daughter's pimp. Photo: Paul Chinn, The Chronicle