Soon after being released from jail, pedophile John Davies confesses to abduction and killing a 5 year old boy 25 years earlier. Suspicious of Davies's motives, the team reopens the case--to prove his innocence, not his guilt.

Celebrated graffiti artist Danny "Flak" Tyler was murdered four years ago . So why is "I Killed Flak" graffiti suddenly appearing around London? While the ream focuses on Flak's former crew members, Brian's obsession with Twitter proves distracting