Delightful part. I loved that Lois figured out there had to be another woman.
Now when she meets with Henderson in the morning she can point in to looking at signs of another woman. Lana Lang in her one episode was played by a blonde,
Emily Procter . So blonde hair might have been snagged by the Forensic/CSI* team but just assumed to be Mayson's hair.
I don't know if our timeline had good DNA testing in the early 1990s but the L&C timeline had human cloning so was far ahead of our timeline in the Bio-sciences. So they clearly will have good DNA testing available.
*yes my sense of humor is odd.
