That Summer by Lauren Willig

Julia Conley left England as a child after her mother was killed in a car accident. Growing up in the United States, she and her father never spoke about what happened. When Julia is left an old home by her just-deceased great aunt, she decides to travel to Herne Hill outside London. With the house overgrown and in need of repairs, Julia slowly goes through its contents. When she discovers a hidden painting that looks to be by one of the Pre-Raphaelites, Julia finds herself deep in a mystery of love, secrets, and betrayal. Helping her with the project is Nick, one of her cousin's friends. Are his motives honest or is he hoping to come away with some riches himself?  That Summer, with its past and present story lines, is an enjoyable summer read.