Bones - Season 7 Episode 6 -

A human spinal column was deposited at night at the Lincoln monument with a message taunting to find the rest. Its vertebrates were reassembled, forming a code Hodgins gets obsessed with solving. The blood on it stems from 5 FBI agents, who donated it at the Red Cross. Sweets and his profile help Booth identify suspects, notably brilliant hacker Christopher Pelant and the omnipresent newspaper reporter Ezra Krane. Another murder follows and a highly original diversion crime. Bones meanwhile accepts to stay home and seriously considers Booth's ideas for a new home.