Child slavery is against the law in Haiti, but an estimated 300,000 children there are forced to become domestic laborers.

During a five-month long investigation ABC News' Dan Harris uncovered disturbing evidence of modern-day slavery.

Click the play button for more from Dan Harris, as he talks about his extensive coverage on child slavery in Haiti.

Using hidden cameras, Harris found traffickers willing to sell children for as little as $150.

Harris interviewed local pastor Jean-Etienne Charles who preaches against child slavery in Haiti. The pastor explains why some parents feel forced into it.

"I don't think they don't love them," he said. "They love them but because they think they cannot take care of them so they just turn them over to another person and the other person ensures them that they will take care of the child. But when the child gets into the house they do not keep their promises."