Finlay Donovan Crosses the Line A Novel

By: Elle Cosimano

Published by St. Martin's Publishing Group, 2026-03-17

From New York Times bestseller Elle Cosimano comes Finlay Donovan Crosses the Line—the highly anticipated next installment in the beloved Finlay Donovan series.

Life hasn’t been easy for Finlay Donovan lately, but it just got a whole lot harder. Her nanny and partner-in-crime, Vero, has been extradited from Virginia to Maryland, where she’s facing criminal charges for a theft she swears she didn’t commit. A prisoner to an ankle bracelet as she awaits her trial, Vero is forced to live with her overbearing mother and nosy aunt. Threatening messages keep arriving on her mother’s door, demanding Vero “turn over the money . . . or else.” And if she doesn’t figure out who really stole her former sorority’s treasury funds, her next home might be a prison cell.

But proving her innocence might be an impossible feat. Vero was the treasurer of her sorority when the money went missing—one of the only people who had access to the cash. And her alibi is a date who ghosted her. With her court date quickly approaching, and her mysterious stalker on her tail, Vero needs to clear her name fast.

Finlay decides a trip to Maryland is in order. After all, Vero stood by her through her darkest moments, and Finlay will be damned if she lets her best friend and children’s nanny be convicted for something she didn’t do. She sets off on a mission to sus out the real thief and bring Vero home.