S1·E19 The Land of Confession

The 999 made a two-week stop to the Planet of Confession, a world supposedly free of all evils. While the conductor decided to take his holidays on the planet, a robber appeared and took all of his money. The incident was made aware by the "Cleaningless Committee". Instead of catching the perpetrator, the committee decided to uphold the planet's reputation by trying to silence the three travelers.