Scooby-Doo of Scooby-Doo", and "Scooby's Mystery Funhouse", the rerun package remained on the air until the end of the 1986 season. "Scooby-Doo" was restored to a standalone half-hour in 1983 with "The New Scooby and Scrappy-Doo Show" in 1983, which comprised two 11-minute mysteries per episode in a format reminiscent of the original "Scooby-Doo, Where Are You!" mysteries. Heather North returned to the voice cast as Daphne, who in this incarnation solved mysteries with Shaggy, Scooby, and Scrappy while working undercover as a reporter for a teen magazine. This version of the show lasted for two seasons, with the second season
Scooby-Doo the Night" on a flight to one of the development meetings, and decided to rename the dog "Scooby-Doo" and re-rechristen the show "Scooby-Doo, Where Are You!" The revised show was re-presented to CBS executives, who approved it for production. The first episode of "Scooby-Doo, Where Are You!" "What a Night for a Knight" debuted on the CBS network Saturday, September 13, 1969. The original voice cast featured veteran voice actor Don Messick as Scooby-Doo, radio DJ Casey Kasem (later host of radio's syndicated "American Top 40") as Shaggy, actor Frank Welker (later a veteran voice actor in his own right)