That old line “a thief always returns to the scene of the crime” was true for a couple in Badalona, Spain. But they had to: They left their baby behind at the bookshop they were shopping. The couple was caught putting items into bags and slipping things into clothing, and when they realised the jig was up, they made a mad dash for the door-leaving the little nipper. The shopkeeper called local police who left the child with a caretaker. Meanwhile, when the couple returned to the bookstore hoping to steal their baby back, the cops were waiting and promptly arrested them, ThinkSpain reported. As weird as it sounds, many other criminal parents have involved their kids in the “family business” recently. Last month, a suspected shoplifter who allegedly brandished a knife while pushing her baby in a stroller was arrested in San Jose.