sentences:  The plot focuses on Dr. Temperance Brennan and FBI Special Agent Seeley Booth's investigation into a seven-year-old murder, of which death-row prisoner Howard Epps is accused.Booth and Brennan are given a deadline to prove Epps' innocence or guilt before his imminent execution.The episode opens with Dr. Temperance Brennan and Special Agent Seeley Booth arguing about Booth's refusal to approve Brennan's application to be allowed to carry a concealed weapon as she was formerly charged with a felony (despite not being convicted).