An episode of The Engines of Our Ingenuity explores the topic of fingerprints. This episode, numbered 1622, delves into the use of fingerprints for crime detection and identification. The episode poses a question, "Who are you?"

which suggests an examination of how fingerprints can reveal an individual's identity. Further details about the episode and its discussion on fingerprints can be found through the source, which provides more information on the topic of crime detection and identification through fingerprints.