 Back at camp , Jim ( Andrew Rothenberg ) begins digging holes , refusing to explain why or take a break despite the extreme heat . When the survivors confront him about his abrupt obsessive compulsive behavior , he lashes out with his shovel , which forces Shane Walsh ( Jon Bernthal ) to restrain him . Jim has an emotional breakdown and reveals that his family was attacked and eaten by a horde of walkers . When he comes to his senses again , he can no longer remember why he was digging the holes , only that a dream inspired him to do so . He tells Lori Grimes ( Sarah Wayne Callies ) to keep her son Carl ( Chandler Riggs ) safe and never let him out of her sight . 
