More adventures for the de Granville family coming out in September. Hartslove Castle is still the castle of Will, Gavin and Ellie of Blood Red Horse, but Rose, Lily, Garth, Daisy, Clover and Columbine are in danger of losing it. They too have a blood red horse. They call him The One because he’s always going to be the one who brings home the bacon, as it were. But people aren’t always reliable; horses don’t always do as they’re told; and things aren’t always quite as they seem.