A Secret in the Garden (Dark Manor Chronicles, #1)

"Eliza is a part of a group of botanists that have been dying to get their hands on the rare plants rumored to be inside of the abandoned conservatory at the Blackwood manor, the home of broody millionaire Jasper Blackwood, who is rumored to have killed his parents for their money. Jasper agrees to let Eliza restore the conservatory and will share the plants with the garden, but she must do it all alone and stay in the manor while doing so. After finding a rare corpse flower, she agrees, only to be visited by the ghost of Jasper's mother, who seems to need her help but can't speak to her, eventually leading her to a magical locket buried in the soil that helps her communicate with Eliza. As Jasper and Eliza spend more time together and feelings develop, Eliza realizes there is a lot more to the murders of Jasper's parents, and she's the only one who can help put the puzzle pieces of the Blackwood manor back together"-- Provided by publisher.