When bookish Penny Collins reluctantly lets her sister drag her to an estate sale at a neighbor’s house, she’s hoping for a little diversion rummaging through dusty antiques. Instead she ends up in a public squabble over candlesticks with the deceased owner’s nephew, Anthony—right before a dead body tumbles out of a closet.

Penny’s plan for the summer involved finalizing tenure at the university where she’s a computer sciences professor. Now she’s suddenly on the run with a man she barely knows, scaling walls, evading bullets, and accidentally stabbing henchmen. It seems the wrong people believe she’s Anthony’s girlfriend and in possession of something they desperately need—and will do anything to get.