kɹˈɔs ænd sˈæmpsən dɪskˈʌs ɐ θˈiəɹi ðætðə ɡˈɜːlz ɑːɹ bˌiːɪŋ hˈɛld ɪn ɐn ˈʌndɚɡɹˌaʊnd hˈaʊs, bˈɪlt ɪn ɐn ˈɛɹiə ðæt wʌz pˈɑːɹt ʌvðɪ ˈʌndɚɡɹˌaʊnd ɹˈeɪlɹoʊd.
Cross and Sampson discuss a theory that the girls are being held in an underground house, built in an area that was part of the Underground Railroad.