By John Lyle Belden

Actors Theatre of Indiana presents “Whodunit: The Musical” by Ed Dixon, a musical theatre comedy treatment of an early-20^th century murder mystery in a style something like a Carol Burnett Show sketch.

As long as you keep this in mind and adjust expectations accordingly, you should have some fun with this felonious farce, loosely inspired by the classic (serious) mystery novel, “The Circular Staircase” by Mary Roberts Rinehart. Some liberties were taken with plot and characters, giving the show twists of its own – even the program book can’t be completely trusted.

In 1931, spooky happenings at remote Sunnyside Cottage have scared off the entire staff except for head butler Thomas (John Vessels Jr.), just in time for the arrival of vacation renter Carrie (Judy Fitzgerald) who arrives with her personal maid Liddy (Cynthia Collins). Soon they are joined by Carrie’s niece Sally (Logan Hill), who has brought a friend from school – a man! Call him Jack (Jacob A. Butler). Things eventually go from awkward to scary when, after the lights go out and are restored, the portrait of Sunnyside’s deceased owner, Mr. Armstrong, is found destroyed and a crowbar – and an expensive cufflink – are discovered on the stairs. Thomas suggests calling the police in the morning, but that becomes sooner when, after all had gone to bed, a dead body is discovered in the middle of the floor.

This rather loose stiff is Reggie Armstrong, the owner’s estranged son – who had also been romantically stalking Sally and framed Jack for embezzlement at his work. Detective Jarvis (Eric Olson) arrives, trusty magnifying glass in hand, to search for clues. It turns out that nearly everyone had an issue with Reggie, and everyone has a gun. Before this mystery is solved, there will be another body, the fortune-telling cards of Zara the groundskeeper, and several song and dance numbers including, “It’s Harder to Move a Body,” and “A Dark and Stormy Night.”

Eventually, though, a Mysterious Stranger will appear to reveal all.

The campy capers are made entertaining by an excellent cast. Fitzgerald takes all the absurdity in stride, including the over-the-top British accent of fellow ATI co-founder Collins. Butler shows interesting versatility; Olson masters the melodrama; and Hill’s performance includes some award-worthy overacting. Vessels, like his character, is master of this madhouse. Julie Lyn Barber is director, with choreography by Carol Worcel, and musical and vocal direction by Brandon Vos.

Discover “Whodunit” through Feb. 16 at The Studio Theater at the Center for the Performing Arts in downtown Carmel. For tickets and info, visit atistage.org or thecenterpresents.org.