The Cyber House Rules - S3-E11
Continuity mistake: When Fry, Leela and Bender enter the orphanarium you can see 3 owls. In the next shot you can see 1 owl walk down the corridor. In this shot you can also see the door and no owls go through there, but in the next shot the other 2 have disappeared.
The Cyber House Rules - S3-E11
Continuity mistake: When the doctor removes the bandages round Leela's head, Hermes and Amy change position.
The Cyber House Rules - S3-E11
Continuity mistake: In the scene where Leela and the doctor are driving out of town and throughout the episode Leela's second eye is following her motion. This despite the fact that in a previous scene we could see that she was unable to move her second eye. (00:09:55 - 00:12:00)
The Cyber House Rules - S3-E11
Continuity mistake: When Bender and Fry leave the kids' room, Bender shuts the sliding door closed. When he's calculating how much he's making, the door is open.
Answer: You are thinking about episode 20 of series 2 - "Anthology of Interest I". She technically never kills anyone, but in the episode she ask a "What if machine" (one of the Professor's inventions) what would happen if she was more impulsive. The machine then shows the more impulsive Leela killing off the Professor to get the money from his will and thereafter killing Hermes, Bender, Scruffy, Cubert, Nibler, Amy and Zoidberg to cover it up. Finally she does something really impulsive with Fry.
Andreas[DK]