The House on the Cliff is the second book in the original Hardy Boys
series. Frank and Joe Hardy are investigating a mysterious old house
high on the cliffs above Barmet Bay when they are frightened off by a
mysterious scream. The boys return to the apparently haunted house and
make a connection between the place and a smuggling case their father is
working on. When their father goes missing, they start-out investigating
the secret caves beneath the house but soon confront the smugglers.