It's appropriate that Paul Oakley Stovall's new play touches on Darwinism since the playwright's clearly evolving artistically. Ape suggests a talent that may soon develop opposable thumbs, at which point expect something fine. He's not there yet, however. Stovall demonstrates a knack for dialogue, an impulse toward intriguing characters, and a light, almost musical way with a joke. But a great deal is left unexpressed and unexplained, mostly because he hasn't found the narrative heart of this piece about four people stranded at a high school during a blizzard. Krissy Vanderwarker's production for Dog & Pony Theatre Company gives the script its best chance--though some monkey business gets tedious--and Evan Fillon stands out as a precocious teen with a secret. --Tony Adler a Through 10/13: Wed-Sat 8:30 PM, Raven Theatre, 6157 N. Clark, 773-235-0492, $15-$20.