The Waltons

The Foundling (1x1)

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When a young girl is left on the doorstep of the Walton's home, they take her in. After taking her to the doctor, they learn she is deaf. One night while the Walton family listen to the radio John boy takes matters into his own hands when Holly (the deaf girl) runs up to her room crying. He teaches her sign language! This new skill comes in handy when the youngest of the Walton family gets locked by accident in a box in a haunted house, which later turns out to be the house where Holly lives.