Laura Lee Hope 
Outdoor Girls in a Motor Car 
The Haunted Mansion of Shadow Valley

Molly Billette is beside herself with glee to be the proud owner of a new automobile. But the motor car brings with it a nasty run of bad luck. First, Mollie strikes a mysterious young woman with the car, but the injured girl disappears when the Outdoor Girls take her to a nearby home to seek help. Then, a local storekeeper asks the girls to investigate strange goings-on at a local mansion — and once they arrive there, Mollie is abducted. Will her friends be able to rescue her?