Shoplifters Leave Baby Behind At Scene Of Crime (VIDEO)

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 realized the jig was up, they made a mad dash for the door -- leaving the little nipper, according to LifeInCatalonia.com.

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 arested them, ThinkSpain reported.

As weird as it sounds, many other criminal parents have involved their kids in the "family business" recently.

Earlier this week, a pregnant woman accused of shoplifting hit three employees as she fled a Walmart store in Corpus Christi, Texas, according to KRIS-TV.

Investigators say the woman was with a small child when she was stopped by an employee before leaving the store.

She then escaped to the parking lot, got behind the wheel of her car and backed up into three employees, who police say were trying to convince the woman to come back inside the store.

Last month, a suspected shoplifter who allegedly brandished a knife while pushing her baby in a stroller was arrested in El Cerrito.

Employees told police they attempted to detain Booshondia Daniel, 29, after she tried to leave the store without paying for merchandise, the San Jose Mercury-News reported.

Daniel then allegedly pulled out a knife and began waving it in a threatening manner before fleeing the scene while pushing the baby inthe stroller.