in custody. reporter: a relieved community turn s out to thank law enforcement. [ cheering ] the nightmare is over but the story is still unfolding. even in critical condition, david sweat begins to spill the details about the great escape. he tells investigators he separated from richard matt five days earlier because matt was slowing him down. sweat said matt was out of shape and hitting the bot le too much after they had broken in to a cabin. sweat shares they planned to go to mexico after escaping but were forced to improvise when prison seamstress joyce mitchell failed to pick them up in the getaway car. when mitchell doesn t show up the mexico plan is foiled and they head north to canada. reporter: remember the plan to kill joyce mitchell s husband lyle, he said it was mitchell s idea to kill her husband.