When a neighbour's house burns down, the gang immediately roll up their sleeves to help out. However, even their best-intentioned plans don't run smoothly.
A series of murders in San Francisco bearing the tell-tale signs of the infamous Zodiac Killer have the BAU wondering if the notorious serial killer has returned. Meanwhile, Reid ponders if he should be doing more with his genius abilities.
When a kidnapped officer escapes her captor, the team discover a strange connection to her missing husband; Abby knits gifts for the new members of NCIS.
Samcro uses a charity motorcycle ride as cover for a gun-running trip. Gemma comes face-to-face with her rapist.
Max and Caroline remain hopeful that Martha Stewart will support them with their business venture. When her lucky pearl necklace breaks, Caroline worries that they will be cursed with bad luck.