Goodbye, Iowa

In which we discover exactly what was in room 314 and what it enjoys doing in its spare time. Meanwhile, back at Xander's, the gang finally sleeps together, and Riley loses his mind. These last two points are unrelated.

Official back-of-box synopsis:

Buffy and Riley's relationship is put to the test when she investigates Professor Walsh's death and comes up against the Initiative's secret weapon.

From the old WB Buffy website:

MOTHER MAY I - Buffy and Riley's relationship is put to the test when she investigates Professor Walsh's death and comes up against the Initiative's secret weapon. While Buffy is trying to find a way to save Sunnydale from rogue warrior demon on the loose, Riley becomes paranoid and delusional and challenges Buffy when he discovers that his mentor has been killed. Elsewhere in town, Spike has become the outcast among demons since he has taken up with the Scooby-Doo Gang.

Cast:

• Sarah Michelle Gellar as Buffy
• Alyson Hannigan as Willow
• Nicholas Brendon as Xander
  

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• Anthony Stewart Head as Giles
• James Marsters as Spike
• Saverio Guerra as Willy
• Emma Caulfield as Anya
• Amy Powell as TV News Reporter
• Marc Blucas as Riley
• Bailey Chase as Graham
• Leonard Roberts as Forrest
• Amber Benson as Tara
• George Hertzberg as Adam
• Jack Stehlin as Dr Angleman
• JB Gaynor as Little Boy
• Andy Marshall as Scientist #1
• Paul Leighton as Rough-Looking Demon
• Karen Charnell as Shady Lady