Seasons & episodes

S4 · E25Helga Sleepwalks 1999-10-23 · 11 min＋

After eating pork rinds, Helga sleepwalks, uttering her secret about Arnold as she does so.

S4 · E26Fighting Families 1999-10-23 · 11 min＋

Arnold, Grandpa, Grandma, Ernie, and Mr. Hyunh compete on a game show against a "perfect" family from PS 119

S4 · E27Headless Cabbie 1999-10-30 · 11 min＋

Arnold tells an urban legend about a decapitated taxi driver. The gang goes out, only to find the details in the story are becoming real.

S4 · E28Friday the 13th 1999-10-30 · 11 min＋

Arnold and Gerald try to prove superstitions are fictitious, only for it all to backfire on them.

S4 · E29Veterans Day 1999-11-06 · 23 min＋

Arnold's Grandpa recalls his adventures as a soldier in the Second World War, outwitting a regiment of Nazis, while Gerald's dad, Martin, remembers his own time serving in Vietnam.

S4 · E30Helga on the Couch 1999-12-04 · 23 min＋

Helga confides in the school psychiatrist about her social life, family life, and her love for Arnold.

S4 · E31Dino Checks Out 1999-12-11 · 23 min＋

Dino Spumoni is found missing and then declared dead after what appears to be a suicide attempt. but Arnold finds out that this isn't the case, and he secretly lives in the boarding house, believing that his work will skyrocket in value after his "death".