Ethics
When Worf is paralyzed after an accident, Beverly offers him neural implants that could at least partially restore his mobility, whereas Dr. Toby Russell has developed a highly experimental technique of a replicated spine that could heal him or kill him. Ashamed about being helpless, Worf asks Riker to help him commit ritual suicide, but according to Klingon customs the only one to do this would have be his son Alexander whom Worf doesn’t want to involve. Worf finally agrees to Russell’s surgery. He apparently dies, but his highly redundant Klingon physiology brings him back to life. summary by Ex-Astris-Scientia
Oh, those Klingons with their honor! LOL! Beverly’s comment is one of my favourites throught the entire series, I believe: “Don’t expect too much, he’s in full Klingon mode!” 
What I concentrated on here, was Alexander, though. It’s a good thing Worf finally managed to realize what I believe the most fundamental truth of parenting. When your child is in need, you can throw all your worries, troubles and even principles and take care of the kid first and foremost.
Don’t have much to comment about the good versus evil doctor plot. It’s too obvious and has been too predictable from the start. She had to succeed or we wouldn’t be seeing Worf anymore. Feeble.