To help her family make ends meet, Kit takes a job helping an elderly lady at a rundown mansion called Rivermead Manor. When she discovers a hidden room in the old house, she is sure its secrets will make a great newspaper article. But then Jessamine, Kit's long-lost friend, comes to visit and seems to be in trouble, yet she won't confide in Kit. Determined to help, Kit follows clues, but will both of these stubborn mysteries lead to a story that's bigger than she could have imagined, or will they stay hidden at Rivermead Manor?