Although Coup! has a small cast and unfolds mostly in a secluded mansion during the 1918 influenza pandemic, it packs a lot of flavor, suspense and droll comedy into its slim 97-minute running time, making it fun enough to deserve an exclamation point in its title. Peter Sarsgaard offers a sly, juicy performance as a shady chef who weasels his way into the home of an entitled young heir (Billy Magnussen). Soon, the upstart is turning the servants and family members against the hypocritical patriarch, who fancies himself a progressive. A collaborative effort between writer-directors Austin Stark (The God Committee, The Runner) and Joseph Schuman, this satirical work is hardly profound or subtle about the parallels with the present-day class conflict, but it wears its screw-the-rich subtext with insouciant breeziness.

In the opening minutes, Sarsgaard’s Floyd Monk is met shaving off his beard and styling his mustache, seemingly to make himself look more like the man lying dead in the next room with a bullet in his head, whose passport Floyd takes. Only much later will we learn about his relationship to the dead man. But given that background checks weren’t so easy to execute in the 1910s, especially during a pandemic, Floyd has no problem passing himself off as the chef an employment agency has found for the Horton family, residents of a mock Palladian mansion on Egg island, a boat ride away from New York City. The head of the family, Jay (Magnussen, who, like Sarsgaard, is also an executive producer here), has inherited the estate from his father, a meat-packing magnate whom Jay nevertheless exposed as a bad employer in the pages of The Progressive Tribune, the newspaper for which he writes.

Although he has vowed to give the estate to the poor someday, Jay isn’t so pure as to refuse to live there now with his wife, Julie (Sarah Gadon), a writer in her own right, and their two young children, Tom (Callum Vinson) and Molly (Willa Dunn). Also living on the estate are the servants — no, scratch that, the staff, as Horton insists they’re called: Irish housekeeper Mrs. McMurray (Kristine Nielsen), Black maid Mrs. Tidwell (Skye P. Marshall), whose husband (unlike Jay) is fighting overseas, and chauffeur-butler Kaan (Faran Tahir), a Turkish-immigrant. All of them live in a small cottage down the hill while the family enjoys the mansion, with its 12 bedrooms and gorgeous indoor swimming pool that only the family may use. (The actual pool is located not in the New Jersey house seen but in another historical building, Pleasantdale Chateau, a wedding venue in West Orange, New Jersey, and yes, offers of accommodation would be gratefully received.)