The first time the pair visit passes without incidence, but the second time, Willie has recognized the pair as the "Candid Camera Killers", as the cop's footage has hence been circulated on television networks.
The first time the pair visit passes without incidence which happens when Willie is away to talk with his girlfriend while Carl minds the store. But the second time, Willie has recognized the pair as the "Candid Camera Killers", as the cop's footage has hence been circulated on television networks.