What Star Trek: TNG episode is this?!

What Star Trek: TNG episode is this?

Okay, I'm a huge geek. ;) I got hooked on ST:TNG years and years ago. I'm trying to find out what episode it is. My memory of it is pretty fuzzy. But it's pretty much about one of the areas on the ship where Counselor Troi is and sees Riker kissing someone else and others see different things like that, too. I want to say Worf and Riker see things, too. Kind of a love triangle type of thing. She swears that as the ship was being built that someone hid a body behind a panel. I'm trying to remember more about it and I really want to see the episode again. Anyone know the name/season of it?

1 week ago
THANK YOU!!! You are the best. My husband and I have been watching all of the TNG seasons on DVD and are almost done with season 6. I'm almost there.Thanks again.

The espisode is called Eye of the Beholder. It is from season 7. Troi and Worf start thier relationship. The crewman Kwan commits suiside by jumping into a plasma stream. Troi and Worf go to investigate and she lives out a senaio that Worf is cheating on her with some girl and then she tries to kill him The scenes change from the ship to when the ship was being built. That's when the original love triangle happend hence the dna in the wall. Physic after images are what supposedly caused her to see these things.