Deadly Legacy by Daniella Bernett

A month after her adventures trying to track down the killer of her friend Charles Latimer, Emmeline finds herself in a car that has crashed on a lonely country road in Kent with a dead man as her companion. How did she come to find herself in this predicament? It all started with a man named Ambrose Trent, the fiancé of her friend Claire Sedgwick. But there’s something not quite right about Ambrose. When he ends up dead, Emmeline believes she knows who the killer is. But as new evidence comes to light, she realizes that she’s dead wrong—and only Gregory can save her.