Soul Eater Episode 18: The Eve Party Nightmare: And So the Curtain Rises?
Episode 18 of 51 of Soul Eater, aired August 4, 2008, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Since no one knows of what Sid discovered, all the students and faculty are attending a party celebrating the founding of Shibusen. Meanwhile, Medusa is communicating telepathically with Eruka when a seemingly drunk Stein interrupts her thoughts. Stein wants to dance with her, but once they start, he becomes more serious and asks her if she knows what happened to Sid. Medusa realizes that she has been found out by his words and tries to tempt Stein with a kiss, however, they are stopped by the sudden appearance of Sid that, even injured, warns everyone to get out of there quickly. Stein is concerned about Sid long enough for Medusa to escape from the party. Free charges, but Sid is able to use his last bit of strength to use a special burial technique that causes the main characters to fall through the floor, escaping the trap.