How about a scam investigation?  The detectives could be engaged by a rich widow to investigate a suitor who she suspects is too good to be true, with a sub-plot where one of the detectives has a tryst with her.  Or what if they were to infiltrate a shady underworld organization bent on blowing up the Leaning Tower of Pisa in order to make spaghetti more popular?
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence