Puzzle 3

Allows scuba divers to breathe underwater.

Female sleuth created by The Hardy Boys author.

He robs from the rich and gives to the poor.

Liquid used for oral hygiene.

Loan sharks, money lenders.

Long sequence of columns.

Meat-eating animal.

Metal wrist restraints.

Obeying an order.

Occupation of someone who travels into space.

Resolve, determination.

Revert to a previous opinion; retract one's words.

Satisfying, gratifying, fulfilling.

School area where piano lessons take place.

Sirened vehicle for health emergencies.

The end of a joke, the payoff.

Type of plane ticket with a return date.