The House on the Cliff

Teenagers Joe and Frank Hardy were not only smart and resourceful but had ample amounts of courage and wits to match. Despite many clashes with danger, they had intelligence and considerable cleverness to cope with whatever peril and misdeeds confronted them. Much had been learned through their father, former police detective Fenton Hardy, and they constantly managed to cope with whatever mysterious events and culprits came their way.
While investigating a mysterious old house high on a cliff, they hear a scream and are scared away thinking the place might be haunted. Their dad has been hired by a pharmaceutical firm to find missing drug shipments and calls on the boys to help. He disappears at one point and his sons team up to rescue him from whatever happened. They made an extremely brave rescue of their dad from unscrupulous smugglers. How? Just listen and find out for yourself.