Trifles is, perhaps, Glaspell's masterpiece. In the aftermath of a death, possibly a murder, the authorities of law and order investigate, but it is the two wives, accompanying their husbands, who deduce the most from the trifles in the kitchen as their men go about their important business. This play is a gem. One of the best short plays ever written.

Supressed Desires, written with her husband George Cram Cook, takes a very funny look at the then new vogue of Freudian analysis with hilarious results.

The Outside is set in a disused life-saving station, now belonging to Mrs. Patrick as a refuge from life, a sanctuary on the edge of existence. But when the former life savers return with a body to be revived, the owner and her companion are forced to re-assess life on the edge.