THE SECRET OF MAKING WHOOPEE II: THE HOUDINI INCIDENT.

At the Greenwich House Theatre, 27 Barrow St. Through Aug. 24. (212) 279-4488.

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‘SHERLOCK Holmes and the Secret of Making Whoopee II: The Houdini Incident” marks the further adventures of last year’s Fringe delight, “Sherlock Holmes and the Secret of Making Whoopee.”

I called the first play a cocktail, which makes this one a sort of pernod, a mad after-dinner drink of dizzying nonsense.

In 1925, Arthur Conan Doyle (Adrian LaTourelle) sits in his London club chatting with Joseph Bell (Rich Liccardo, in a funny performance), the Scottish physician upon whom Holmes is based.

Doyle has two concerns: He’s convinced he’s the son of a leprechaun and he thinks he’s gay.

Doyle is visited by three archetypes of cleverness: a sexy woman (played by a luscious Lael Logan) who’s involved in a murder; Harry Houdini’s all-but-forgotten brother, Hardeen (Jason Lindner, who’s hilarious); and, inevitably, Sherlock Holmes himself (Brandon Miller).

It’s also a meta-theatrical musical, which means the characters urge each other to “sing the f – – – ing song.”

But forget the fancy names. “Sherlock Holmes” is actually a funny and outrageous mix of reality and riotousness.

The secret of making whoopee is to be as daring and devil-may-care as this nutty play.