Clue: Second of houses close to the sea: robber's source of lucky loot? (3-5,6)
Answer: ONE-ARMED BANDIT
Explanation: Second of houses close to the sea: robber's source of lucky loot? (3-5,6)
(h)**O**(uses) + **NEAR** ("close to") + **MED** ('sea") + **BANDIT** ("robber")