This episode continues the amnesia subplot, and makes Lois look like a weak-willed dolt. Dr. Deter, who abused his position as her doctor to make her fall in love with him, warns Lois not to tell anyone about their relationship, and she docilely says "Okay" like she's a high school kid who had sex with her teacher. He tries to take her off an investigative story, and she scarcely even complains. And when he objects to Clark's declaration that he is getting a second opinion on Lois's treatment, does the award-winning investigative reporter respond, "Hey. Why would you object to me seeing another doctor unless you were afraid they would find evidence of malpractice?" Nope, she sees nothing suspect.
This also makes it hard to buy Deter's plot. In the first place you have to wonder how he thought he could just take a patient away from her family and fiance, and Deter is so unsubtly controlling of Lois that it seems ridiculous that no one suspects he's doing her any harm. Mind you, the actors are not to blame. As Deter, Larry Poindexter does an admirable job of presenting a charming and harmless exterior over an unscrupulous interior. But the script simply does not allow the character to have that subtlety.
I think what the amnesia subplot needed to work was for Deter to be a good, honest doctor who Lois falls in love with because of patient transference. The dilemma would be the same, but no idiocy is required upon the parts of the characters to maintain it, and it wouldn't be resolved just by Lois getting her memory back.
The A plot also struggles. The scenes between the Johnsons are brilliant, making Herkimer seem more like a victim than a villain, but that also makes it harder to accept when the episode disposes of Herkimer in such a cavalier fashion. I do like many of the episode's moments; there's great repartee between Clark and Deter, and the montage where Lois is hit by flashbacks while a scat-singing funk song plays is inexplicably memorable and awesome. But as with "Forget Me Not", the gullibility of the characters makes the episode as a whole hard to watch.