In "The Marriage Plot," Jeffrey Eugenides' first novel since 2002's Pulitzer Prize–winning "Middlesex," he examines the lives of three college seniors at Brown University in the '80s. The three characters — Madeleine, an incurable romantic; Leonard, a brilliant but unstable philosopher, and Mitchell, a clear-eyed religious-studies student — find themselves enveloped in a love triangle of sorts that loops in enigmatic professors, feminist theorists, neo-Victorians and concerned mothers. Skylight Books, 1818 N. Vermont Ave. 7:30 p.m. Thurs. skylightbooks.com. Free.