Finn-agled - A Finn's Finds Mystery

A secret message hidden inside of an antique wooden box, an unidentified dead body, and a mother determined to marry her off to the high school crush whom she hasn't seen since...well...high school. There's no doubt about it; Finn Bartusiak's life in the seaside town of Port New is about to get interesting. Coming into possession of a 19th-century, bronze and mahogany writing box under somewhat suspicious circumstances, Finn's accidental discovery of a coded note leads her and Spencer Dane, bestselling novelist and love of her life (though he doesn't know it yet), on a quest to unravel the mystery behind the jumble of letters.
But they're not the only ones interested in the cryptic message. There's a con man on their trail, and he'll stop at nothing, including murder, to claim the 'treasure' for himself.