OBJECT LESSONS was inspired by an eccentric Chicago heiress named Frances Glessner Lee. In the 1940’s, Lee designed 18 miniature models of crime scenes to train police investigators. Built to the scale of one inch to one foot, and complete with tiny victims, Lee’s dioramas are enigmas begging to be solved. Here are Lily Sparks’ favorites: 1: Three-Room Dwelling: Robert and Kate Judson, and their baby Linda Mae, are shot to death in their tidy little house. Their phone is off the hook, the table’s set for breakfast, the murder weapon—a rifle—is on the kitchen floor, and both doors are locked from inside. 2: Attic: Miss Jessie Comptom, a spinster, hangs from a rafter in her attic. Old letters and other relics of her past are scattered beneath her. One shoe dangles from her foot; its mate is on the stairs. 3: Dark Bathroom: Maggie Wilson lies face-up in a bathtub in a rooming house. Fully clothed, she appears to have fallen in backward. She had two male visitors that night, and there’s a liquor bottle on the floor. 4: Kitchen: Mrs. Robin Barnes lies on her kitchen floor. The stove’s gas jets are open, and her face has a rosy…

Mid-century American realist painter Edward Hopper is celebrated for Nighthawks, his 1947 work in which customers in an all-night diner are viewed through a plate glass window lit by a neon light, and his 1927 Automat, where a girl in a cloche and fur-trimmed coat gazes pensively into a coffee cup in a lonely cafeteria. Hopper returned to that enigmatic woman again and again. He painted her throughout his career. In AUTOMAT, Denver Art Museum Conservator of Paintings Lily Sparks pursues a killer who targets actresses who bring Hopper’s works to life. Lily’s perfect eye tells her the man in Hopper’s paintings also holds clues to the killer’s identity. And just as the famous artist kept painting the same iconic woman, the killer must keep killing her. Five top Hopper paintings convince Lily she’s on the right track. Hopper started out illustrating trade magazine covers. In 1906, on his first trip to Paris, he painted the watercolor Couple near Poplars. In the style of the day, a Gibson girl with upswept hair and a pinafore over her corseted waist stands with a beanstalk of a man with a pencil moustache and a beret. He’s trying to draw her closer, but…