Use these materials:
    Serial podcast: https://serialpodcast.org/season-one
    Podcast transcript: https://www.adnansyedwiki.com/wp-content/uploads/2018/06/Serial-Podcast-Transcripts-of-All-Episodes-with-ToC.pdf

You can choose some other materials you like, but it must be relevant to the Serial podcast above. Read the attached file for more detailed instructions.